150mm Drawbar Pull Stud With Bore, ISO 7388-3 Form AD DIN 69872 Form A, SK50 Thread M24 - TECWERK
Take advantage of a hardened, standardised retention solution that ensures consistent clamping with steep‑taper toolholders and straightforward replacement logistics; the combination of proven ISO compatibility and measured heat treatment supports longer service life and predictable maintenance intervals. Order directly via Metav Werkzeuge or consult our specialists for application-specific guidance. Retention knob ISO 7388-3 Form AD for SK50 (with bore) — TECWERK A retention knob designed for SK50 steep‑taper toolholders, compliant with ISO 7388‑3 Form AD and DIN 69872 Form A, for secure spindle clamping in heavy‑duty machining Hardened to 58± HRC for wear resistance M24 thread, ground for repeatable seating Parallel ground and blued finish for corrosion protection ISO 7388‑3 Form AD compatible with DIN 69872 Form A Secure clamping for steep‑taper toolholders The retention knob fulfils the primary need for secure, repeatable clamping of toolholders with a steep taper according to DIN 69871. Fitted to an SK50 taper, the component transfers axial pull‑out force from the spindle drawbar to the toolholder body; this results in consistent seating and minimised run‑out during machining. Specified to ISO 7388‑3 Form AD (equivalent to DIN 69872 Form A), the part ensures interchangeability across compliant systems, reducing setup time and the risk of incompatibility when replacing worn or damaged knobs. Durable construction that reduces maintenance intervals Heat treatment to 58± HRC with a controlled case depth of 0.5–0.8 mm provides a hard wearing surface at the contact zones while retaining a tough core to resist impact loads. The thread is soft‑ground to DIN tolerances to preserve engagement accuracy, and the stem is parallel ground then brünniert (blued) to offer basic corrosion protection and smooth insertion. These manufacturing steps combine to reduce fretting and galling at the clamping interface, which in turn lowers the frequency of replacements and supports uninterrupted production cycles. Clear dimensional data for correct selection and fitting Key dimensions are measured and stated to help confirm suitability for specific toolholder assemblies: M24 thread, overall length L1 74 mm, shoulder length L2 34 mm, and diameters d1 28 mm, d2 21 mm, d3 25 mm, d4 11.5 mm. Such figures allow quick cross‑checking against machine and toolholder drawings so that the correct retention geometry is chosen on first attempt. The standardised form designation further assists procurement and inventory management by matching items to existing ISO and DIN references. Operational benefits that support workflow efficiency By specifying a component that is standardised, hardened and finish‑treated, workshops gain predictable service intervals and consistent clamping performance — two factors that contribute directly to process stability and quality output. The standard form and thread mean spares can be stocked without bespoke machining or fitting, shortening downtime when a replacement is required. Coupled with Metav’s distribution and quality‑filtering approach, the solution supports reliable supply and reduces administrative overhead for maintenance planners. For technical enquiries or to source TECWERK retention knobs directly, contact Metav Werkzeuge for application advice and reliable delivery from Emmerich via info@metav-werkzeuge.com or call +49 2822 7131930 — Metav’s precision‑focused team will recommend the best option for specific spindle and toolholder combinations Technical data Article number: 2000832701NW Label: Anzugsbolzen ISO 7388-3 Form AD SK50 m.Bohr.TECWERK Manufacturer: TECWERK Product type: Retention knob Numbers / Core technical data Thread: M24 L1: 74 mm L2: 34 mm d1: 28 mm d2: 21 mm d3: 25 mm d4: 11.5 mm Hardness: 58 ± HRC Case depth: 0.5–0.8 mm Standard: ISO 7388-3 Form AD (DIN 69872 Form A) Special features / Design For toolholders with steep taper per DIN 69871 Hardened in service for wear resistance Thread soft‑ground to DIN tolerances Parallel ground and blued finish Supplied with bore for fitting Compatible with SK50 taper assemblies FAQ What taper types is this retention knob compatible with? The retention knob is intended for SK50 steep‑taper toolholders and is designed for use where DIN 69871 tapers are specified; the ISO 7388‑3 Form AD geometry matches compliant systems. What does the heat treatment specification mean for service life? A hardness of 58± HRC with a case depth of 0.5–0.8 mm gives a hardened wearing surface while preserving a tough core, which improves resistance to wear and helps extend the interval between replacements of the retention knob. Can the M24 thread be used in all drawbar systems? The M24 thread and soft‑ground machining follow DIN practices for accurate engagement; compatibility depends on the spindle drawbar thread and the toolholder assembly — confirm the M24 specification against machine documentation. How does the ISO form designation affect interchangeability? The ISO 7388‑3 Form AD designation (corresponding to DIN 69872 Form A) guarantees a standard geometry so the retention knob can be replaced with the same form across machines and suppliers without custom adaptation. Are the dimensions suitable for inventory management? Yes — stated dimensions (L1, L2, d1–d4) allow direct cross‑reference with toolholder drawings and support standard spare‑parts stocking for maintenance planning. Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund
53mm Pull Stud DIN2080 Ott Ring Groove Internal Thread M16, d2 21.1mm d1 25mm d3 17mm L2 25mm - TECWERK
The robust DIN 2080 specification, internal M16 thread and SK40 taper compatibility ensure secure, repeatable clamping and reduced setup time; benefit from reliable fitment and the included sealing ring for consistent performance. Order the pull stud directly via Metav Werkzeuge or ask our consultants if needed. Anzugsbolzen DIN2080 Ott-Ringnut SK40 with internal M16 thread (TECWERK) A TECWERK pull stud designed to secure SK40 taper tool holders, complying with the DIN 2080 retention knob standard and intended for industrial clamping use. DIN 2080 retention knob standard Internal thread M16 for secure anchoring Compatible with SK40 taper holders Sealing ring included for secure fit Secure clamping for consistent machining The design follows the DIN 2080 specification to deliver repeatable retention forces for tool holders with an SK40 taper. By using a standardised retention knob, the system minimises runout variability and supports predictable tool behaviour during high-precision operations. The combination of standard compliance and precisely defined diameters contributes to reduced tool-change time and stable spindle engagement, which in turn supports steady production cycles and lower scrap rates. Threaded connection that enhances safety and serviceability An internal M16 thread provides a secure mechanical interface between the retention knob and the tool holder assembly. This internal threading simplifies installation and removal compared with external-thread variants, while the integrated sealing ring helps protect the connection from coolant ingress and swarf accumulation. The result is easier maintenance and longer service intervals for clamping components, translating into less unplanned downtime on the shop floor. Clear dimensional data for correct selection Critical dimensions such as d1, d2, d3 and length values are specified to ensure compatibility with matching tool holders and chucks. Precise diameters and length specifications mean that the component locates and seats exactly where intended, avoiding misfit or excessive play. This dimensional clarity supports engineers and buyers in verifying fitment against existing SK40 spindles and fixtures, reducing the risk of ordering incompatible parts. Reliability through industry fit and material neutrality Supplied to meet the DIN 2080 norm and labelled as an Ott-style ring nut, the component focuses on function and fit rather than decorative finishes. Where material choices and coatings are required in specific environments, selection should be based on documented requirements; the current specification prioritises conformity to retention standards and secure engagement. For customers seeking consistent clamping performance, this retention knob variant represents a pragmatic balance between standardised geometry and operational reliability. Contact Metav Werkzeuge for a reliable supply of TECWERK SK40 pull studs — email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss compatibility and delivery from Emmerich. Technical data Article number: 2000832722NW Item: Anzugsbolzen DIN2080 Ott-Ringnut SK40 m.IG Taper: SK40 Thread: M16 Facts d1: 25 mm d2: 21.1 mm d3: 17 mm L1: 53 mm L2: 25 mm Special features DIN 2080 retention knob standard Ott-style ring nut design Sealing ring included Packaging unit: 1 FAQ Is this retention knob compatible with standard SK40 tool holders? Yes. The retention knob is designed to the DIN 2080 specification and is compatible with standard SK40 taper holders when the matching retention geometry is present. What does the internal M16 thread mean for installation? The M16 internal thread provides a secure, serviceable interface for installation and removal, reducing the chance of thread damage compared with some external-thread designs. Does the product include a sealing ring to protect against coolant and swarf? Yes. The Ott-ringnut variant specified includes a sealing ring to help protect the threaded connection from ingress and contamination during machining. Where can the dimensional details be found for verification? Dimensional values such as d1, d2, d3, L1 and L2 are published in the technical section above and can be used to verify fitment with existing SK40 tooling. TECWERK: Manufacturer / Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund
54mm M16 Pull Stud SK40 ISO 7388-3 Form AF Without Bore, O-Ring Sealed - TECWERK
Take advantage of the ISO 7388-3 Form AF specification and SK40 compatibility for reliable clamping and reduced setup time; the M16 thread and O‑ring sealing further protect the spindle interface. Order the pull stud directly via Metav Werkzeuge or ask our consultants if needed. TECWERK Pull stud ISO 7388-3 Form AF for SK40, M16 thread, O‑ring sealed The TECWERK Pull stud ISO 7388-3 Form AF is a retention knob for SK40 toolholders, engineered to ensure secure clamping in CNC machining centres and milling spindles. ISO 7388-3 Form AF standard SK40 taper interface M16 thread with O‑ring seal Proven standard for predictable clamping performance The ISO 7388-3 specification guarantees interchangeability and predictable mechanics when pairing toolholders and spindle clamping systems. As a precision pull stud, this component converts axial retention forces into a reliable grip, reducing the risk of tool slip under load. Conformance to the standard simplifies procurement and maintenance planning in production environments, since replacement parts follow a recognised dimensional and functional pattern rather than bespoke tolerances. Sealed design reduces contamination and downtime The sealed configuration with an O‑ring and the version supplied without a hole prevents coolant and chip ingress at the clamping interface. This protective measure contributes to longer service intervals and lowers the likelihood of spindle contamination, which in turn helps preserve spindle bearings and drawbar integrity. The retention component’s compact geometry (notably the 54 mm overall length and 26 mm collar length) keeps the mass low while maintaining the mechanical leverage required for consistent retention. Compact dimensions and clear compatibility cut setup time Key dimensions such as d1: 19 mm, d2: 14 mm and d3: 17 mm together with the M16 thread and SK40 taper make this retention knob suitable for standardised toolholding systems. Compatibility with common SK40 holders allows workshops to streamline tooling inventories and reduces the time spent checking fits during changeovers. The engineered form AF contour ensures axial engagement is repeatable, supporting consistent concentricity and improved process reliability. For secure clamping with the TECWERK pull stud and fast technical assistance, contact Metav Werkzeuge — email info@metav-werkzeuge.com or call +49 2822 7131930 for advice and supply from Emmerich. Product information SKU: 2000832710NW Standard: ISO 7388-3 Form AF (DIN 69872 Form B) Thread: M16 Shank: SK40 Manufacturer: TECWERK Product type: Pull stud Facts L1: 54 mm L2: 26 mm d1: 19 mm d2: 14 mm d3: 17 mm Special features O‑ring sealed without hole Form AF FAQ Is this pull stud suitable for standard SK40 toolholders? Yes. The TECWERK pull stud ISO 7388-3 Form AF is designed for use with SK40 taper toolholders and follows the ISO 7388-3 dimensional system, ensuring compatibility with standard clamping systems. What thread does the retention knob use and how does sealing work? The retention knob uses an M16 thread and is supplied O‑ring sealed, which prevents coolant ingress and helps maintain drawbar and spindle cleanliness for the TECWERK pull stud SKU 2000832710NW. Which dimensions are relevant for installation clearance? Key installation dimensions include an overall length of 54 mm, collar length 26 mm, and diameters d1 19 mm, d2 14 mm, d3 17 mm; these figures define the seating and axial engagement of the retention knob. Does the product conform to recognised standards? Yes. The retention knob conforms to ISO 7388-3 Form AF (DIN 69872 Form B), providing standardised geometry for interchangeability across compliant toolholding systems. Manufacturer / Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund
54mm SK40 Pull Stud With Through Hole, ISO 7388-3 Form AD, M16 Thread - TECWERK
Take advantage of a hardened, ISO‑compliant design and precise thread grinding for secure retention and repeatable clamping; order the pull stud directly via Metav Werkzeuge or consult the advisors for batch availability. TECWERK pull stud ISO 7388-3 Form AD for SK40, M16 thread, with bore The TECWERK pull stud is a retention screw designed for steep‑taper toolholders to ensure reliable clamping in SK40 spindles and machining centres. Hardened to 58 ± HRC for long life M16 thread, ground to DIN tolerances ISO 7388-3 Form AD compatibility Parallel ground, blued finish, with bore Precision retention for consistent machining results The retention screw is engineered for standardised clamping: compliance with ISO 7388-3 and DIN 69872 Form A ensures interchangeability across machines and toolholders that use the steep taper standard. The combination of an SK40 shank and an M16 thread gives secure mechanical engagement with drawbar systems, reducing the risk of tool loosening during high‑force operations. Reliability in clamping translates into fewer interruptions on the shop floor and better repeatability of critical machining tasks. Robust hardening and finish reduce downtime Heat treatment to 58 ± HRC provides high wear resistance for continuous use in production environments, while the ground thread and parallel ground flange guarantee precise seating and even load distribution. The blued finish improves surface protection against corrosion in workshop atmospheres without affecting dimensional accuracy. Together these characteristics extend service intervals and support stable tool retention, which helps to maintain spindle life and minimise unexpected tool changes. Practical fit and shop‑floor compatibility Dimensions are tailored for consistent integration: overall and shoulder lengths and diameters are specified for precise contact with the spindle taper and clamping mechanism, and the integrated bore facilitates secure engagement and removal where required by the toolholder design. The form AD geometry suits a wide range of SK40 steep‑taper holders used in milling and drilling centres. Supplied as a single item, the component is a suitable replacement part to restore correct clamping performance and maintain production quality. Metav’s quality‑filtered supply chain in Emmerich ensures traceable sourcing and reliable availability for industrial and workshop customers. Contact Metav Werkzeuge for availability of TECWERK pull studs, technical clarification and order support at info@metav-werkzeuge.com or by phone on +49 2822 7131930 Technical Data Article number: 2000832700NW Label: Anzugsbolzen ISO 7388-3 Form AD SK40 m.Bohr.TECWERK Standard: DIN 69872 Form A / ISO 7388-3 Thread: M16 Shank: SK40 Manufacturer: TECWERK Product type: Pull stud Facts Hardness: 58 ± HRC d1: 19 mm d2: 14 mm d3: 17 mm d4: 7.0 mm L1: 54 mm L2: 26 mm Special features For tools with steep taper according to DIN 69871 In‑use hardened 58 ± HRC; Eht 0.5–0.8 Thread soft‑ground to DIN Parallel ground and blued finish ISO 7388-3 Form AD Supplied with bore FAQ What thread size does this retention screw use? The retention screw uses an M16 thread as specified for the TECWERK pull stud (SKU 2000832700NW), ground to meet DIN tolerances. Is this pull stud compatible with SK40 toolholders? Yes. The component is made for SK40 steep‑taper holders and conforms to ISO 7388-3 Form AD / DIN 69872 Form A for compatibility across standard toolholders and spindles. How does the hardening rating affect service life? A hardness of 58 ± HRC increases wear resistance under cyclic clamping loads, so the stud sustains repeated use with reduced deformation and longer service intervals. What is the purpose of the bore in this design? The integrated bore is part of the geometry that supports secure engagement and removal in compatible clamping systems; it is supplied as specified for Form AD variants. Are the dimensions suitable for precision reconditioning of holders? Yes. The specified diameters and lengths (for example L1: 54 mm, L2: 26 mm) support precise seating in SK40 holders and are intended to restore correct clamping geometry. Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund
60mm Pull Stud BT40 With 45° Shank, M16 Thread, 4mm Through Hole, JIS B 6339 - TECWERK
Take advantage of a compact solution that combines a BT40 taper, an M16 thread and a 45° conical seat with a 4 mm bore for stable, repeatable clamping. Order the TECWERK pull stud directly via Metav Werkzeuge or contact our consultants for application advice. Pull Stud JIS B 6339 BT40 with 45° bore (M16) — TECWERK A Pull Stud JIS B 6339 BT40 with 45° bore engineered for secure tool clamping in BT40 spindles, designed for reliable engagement and straightforward installation BT40 taper for standard toolholders M16 thread for secure clamping 45° conical seat with 4 mm bore Consistent clamping accuracy for productive machining The combination of a BT40 taper and an M16 threaded stem provides a mechanically stable interface that reduces axial play and runout. A precise seat geometry ensures repeatable axial location of the toolholder in the spindle, which in turn supports consistent machining tolerances and prolonged cutter life. The compact design is suitable where a reliable connection between spindle and toolholder is required without additional adapter work. Conical seat and bore support reliable retention The 45° conical seat creates an immediate axial datum between holder and spindle, while the 4 mm bore allows engagement of puller or retention devices where required. This feature set simplifies removal and handling during tool changes and maintenance. The conical seat geometry distributes clamping forces evenly, helping to maintain concentricity under cutting loads and lowering the likelihood of premature wear on mating surfaces. Clear dimensional data for easy compatibility checks Essential dimensions are provided for quick verification: overall length L1: 60 mm, functional length L2: 35 mm, shank diameters d1: 15 mm, d2: 10 mm, d3: 17 mm. These nominal values enable a straightforward compatibility assessment with existing toolholders and retention systems. Where spindle and tooling standards are critical, matching the taper form and thread size is the primary check to ensure safe operation. Robust choice for workshop stocking and maintenance A standardised pull stud streamlines toolroom logistics: one compact part can service multiple cutters and holders that accept BT40 tapers and M16 threads, reducing downtime and simplifying inventory management. The simple geometry and clear dimensions support quick inspection and replacement during scheduled maintenance, contributing to a dependable production flow and predictable machine availability. For procurement of TECWERK pull studs or to confirm fitment for a specific toolholder, contact Metav Werkzeuge in Emmerich by e‑mail at info@metav-werkzeuge.com or by phone at +49 2822 7131930 to arrange delivery from stock or to request technical clarification. Technical data Article number: 2000832723NW Manufacturer: TECWERK Product type: Pull stud Taper: BT40 Thread: M16 Measurements L1: 60 mm L2: 35 mm d1: 15 mm d2: 10 mm d3: 17 mm Bore Ø: 4 mm Seat angle: 45° Special features MAS BT 40 45° · with bore Label: Anzugsbolzen JIS B 6339 BT40 with bore Packaging unit: 1 FAQ Which taper and thread does this pull stud use? The Pull Stud JIS B 6339 BT40 with 45° bore by TECWERK features a BT40 taper and an M16 thread (SKU 2000832723NW). What are the key dimensions to check for fitment? Check L1: 60 mm, L2: 35 mm, and diameters d1: 15 mm, d2: 10 mm, d3: 17 mm when assessing compatibility for the Pull Stud JIS B 6339 BT40 with 45° bore. What is the purpose of the 4 mm bore in the stud? The 4 mm bore in the Pull Stud JIS B 6339 BT40 with 45° bore permits engagement with pullers or retention tools and assists in controlled removal and handling during tool changes. How does the 45° seat affect machining performance? The 45° conical seat on the Pull Stud JIS B 6339 BT40 with 45° bore provides a defined axial datum and uniform load distribution, helping to preserve concentricity under cutting forces. Is this pull stud suitable for use in high-speed operations? The Pull Stud JIS B 6339 BT40 with 45° bore is designed as a standard BT40 clamping component; suitability for very high spindle speeds depends on overall toolholder balance and machine specifications—verify balancing requirements before application. Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund
65mm Pull Stud SK50 With M24 Thread, ISO 7388-3 Form AF - TECWERK
Benefit from standardised ISO 7388/II compliance together with an SK50 taper and M24 thread for robust, repeatable clamping; order directly via Metav Werkzeuge or consult the team for application advice. TECWERK pull stud SK50 — ISO 7388/II Form B, M24 thread The TECWERK pull stud is a precision-engineered SK50 retention component for CNC toolholding, manufactured to ISO 7388/II Form B standards and designed for secure drawbar engagement in demanding machining operations. ISO 7388/II Form B compliance SK50 taper for secure retention M24 threaded connection Central bore for drawbar engagement Consistent clamping for heavy-duty machining The retention component delivers reliable clamping through a combination of standard conformity and robust geometry. Manufactured to fit an SK50 taper and equipped with an M24 thread, the part ensures stable axial fixation under high cutting forces, reducing the risk of tool pull-out. Compliance with ISO 7388/II indicates dimensional compatibility across toolholding systems, which simplifies replacement cycles and minimises setup downtime. The retained focus is on measurable performance and repeatability rather than subjective claims. Clear dimensions that explain fitting and function Critical dimensions are machined to allow precise engagement with the machine drawbar and toolholder. The stud features a head and shank geometry reflected in values such as d1: 29.1 mm, d2: 19.6 mm, d3: 25 mm, and d4: 11.55 mm, with overall lengths L1: 65.5 mm and L2: 25.55 mm. These figures define the seating depth, load-bearing area and engagement depth; the central bore improves secure drawbar contact and eases chip evacuation at the interface. Stating these dimensions allows planners to check compatibility with existing spindles and to forecast manufacturability without ambiguity. Practical workshop advantages and integration Integration into an existing clamping inventory is straightforward: the component is a standard retention stud compatible with conventional SK50 toolholders and standardised drawbar systems. The central bore and form designation support routine maintenance and predictable replacement intervals, lowering the overall cost of ownership through reduced downtime. Sourcing via an established distributor brings logistical benefits and a local point of contact for technical queries, helping maintain production flow and inventory control with confidence. The emphasis remains on functionality, traceability and proven design rather than marketing superlatives. Contact Metav Werkzeuge in Emmerich for stock availability, compatibility checks and technical guidance on SK50 retention hardware; email info@metav-werkzeuge.com or call +49 2822 7131930 for direct consultation through a local precision partner Technical data Article number: 2000832721NW Brand: TECWERK Product type: Pull stud (drawbar) Label: Pull stud ISO 7388/II Form B SK50 with bore Facts Standard: ISO 7388/II Form B Thread: M24 Taper: SK50 d1: 29.1 mm d2: 19.6 mm d3: 25 mm d4: 11.55 mm L1: 65.5 mm L2: 25.55 mm Special features Central bore for drawbar engagement Form: B Packaging unit: 1 FAQ What taper and thread does this retention stud use? The retention stud is manufactured for an SK50 taper and an M24 threaded connection, ensuring compatibility with corresponding SK50 toolholders. Is the retention stud compliant with industry standards? Yes, the component is specified to ISO 7388/II Form B, which supports interchangeability and consistent fit in standardised toolholding systems. How do the listed dimensions affect installation? Dimensions such as d1: 29.1 mm and L1: 65.5 mm determine seating and engagement depth; these values allow technicians to verify correct fitment with the machine spindle and drawbar. Does the stud include a central bore and what is its purpose? The part includes a central bore to improve drawbar engagement and to aid chip clearance at the interface, enhancing secure retention during machining. Manufacturer / Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund
74mm Pull Stud ISO 7388-3 Form AF, SK50, M24 Thread - TECWERK
Take advantage of an ISO‑compliant, SK50 toolholding solution that combines repeatable clamping accuracy with simple maintenance; the M24 thread and O‑ring sealing reduce downtime and protect the taper connection. Order the pull stud directly via Metav Werkzeuge or consult their specialists for application advice. TECWERK pull stud ISO 7388‑3 Form AF – SK50, M24 thread, O‑ring sealed The TECWERK pull stud ISO 7388‑3 Form AF is a precision retention knob for SK50 taper toolholders, designed for secure clamping in CNC machining applications. ISO 7388‑3 Form AF compatibility SK50 taper shank for high rigidity M24 thread for secure clamping Sealed with O‑ring, no bore Consistent, standardised clamping for repeatable accuracy The ISO 7388‑3 specification ensures a defined interface between spindle and toolholder, which is crucial for repeatable runout and consistent machining results. Built to Form AF, the retention knob provides the geometric features required for reliable engagement with SK50 toolholders. The M24 thread and the specified lengths (L1: 74 mm, L2: 34 mm) are matched to the standard so that seating depth and draw force remain consistent across machines. Clear numerical values allow straightforward verification during incoming inspection and reduce guesswork in production planning. Protected connection reduces maintenance and prevents contamination Sealing the connection with an O‑ring and supplying the part without a bore lowers the risk of coolant ingress and chip accumulation around the taper interface. This protective detail extends the service intervals of both the toolholder and the spindle taper, which in turn supports higher machine availability. The compact diameters (d1: 28 mm, d2: 21 mm, d3: 25 mm) maintain structural strength while keeping mass low, aiding dynamic balance where it matters. Maintenance becomes a matter of simple checks rather than frequent corrective work, helping to keep set‑up times predictable. Practical compatibility and procurement advantages Because the design follows the ISO 7388‑3 Form AF standard and fits SK50 tapers, the component integrates with common toolholding ecosystems found in production and jobbing shops. The clear specification simplifies procurement and inventory management: the SKU 2000832711NW identifies the part precisely for reorders and cross‑checks. Selecting standardised retention knobs reduces spare‑parts diversity and shortens machine downtime when replacements are needed. For workshops pursuing reliability and straightforward logistics, this standardised component supports both objectives without compromise. Select the TECWERK ISO 7388‑3 Form AF pull stud for ISO‑compliant toolholding and contact Metav Werkzeuge for tailored selection and delivery at info@metav-werkzeuge.com or +49 2822 7131930 Technical data Article number (SKU): 2000832711NW Standard: ISO 7388‑3 Form AF (DIN 69872 Form B) Thread: M24 Shank: SK50 Product type: Pull stud Manufacturer: TECWERK Packaging unit: 1 Notes: without bore; sealed with O‑ring Key measurements d1: 28 mm d2: 21 mm d3: 25 mm L1: 74 mm L2: 34 mm Features / Special features Form AF design Compliant with ISO 7388‑3 Sealed with O‑ring to reduce contamination No bore (solid configuration) SK50 taper compatibility FAQ Which standard does this pull stud follow? The TECWERK pull stud follows ISO 7388‑3 Form AF (DIN 69872 Form B) and is manufactured to the dimensions listed for consistent interchangeability (SKU 2000832711NW). Is the component suitable for SK50 toolholders? Yes, the design matches SK50 taper interfaces and provides the mechanical features required for reliable engagement and clamping. Does this retention knob include a bore for lubrication or fastening? No, this version is supplied without a bore and is sealed with an O‑ring, reducing fluid entry and chip retention compared with bored designs. What are the critical dimensions to check during inspection? Key measurements to verify are d1 28 mm, d2 21 mm, d3 25 mm, L1 74 mm, L2 34 mm; these ensure correct seating and thread engagement for M24 clamping. How is the item packaged and identified for reorder? The part is supplied as a single unit (packaging unit: 1) and is identified by SKU 2000832711NW, which should be quoted when reordering the TECWERK pull stud. Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund
SK40 Pull Stud with M16 Thread, ISO 7388-3 Form AF, 17mm Bore - TECWERK
Take advantage of the proven combination of ISO 7388 / II Form B compliance, SK40 taper fit and an M16 threaded interface to secure reliable drawbar engagement and repeatable tool retention. Order the TECWERK pull stud directly via Metav Werkzeuge or consult our specialists for application advice. TECWERK pull stud — ISO 7388/II Form B, SK40 with bore (M16) The TECWERK pull stud ISO 7388/II Form B is a precision retention component for SK40 spindle systems, engineered to ensure consistent drawbar clamping in CNC and machining-centre applications. ISO 7388 / II Form B standard compatibility SK40 taper for reliable spindle fit M16 thread for positive drawbar connection Central bore for drawbar/coolant access Consistent clamping through standard conformity Compliance with ISO 7388 / II and the Form B geometry guarantees interchangeability with other standard retention systems and supports reproducible clamping forces. The standardised interface reduces uncertainty at tool change, so toolholding performance is predictable and can be integrated into production planning. With the SK40 taper and M16 thread specified, the component is suited to established spindle toolholders, enabling simplified spare-part management and shorter downtimes. Secure drawbar engagement and straightforward functionality The retention stud features a central bore that permits unobstructed drawbar engagement and may be used in systems where internal coolant or lubrication paths are required. The stud’s geometry — including d1: 18.95 mm, d2: 12.95 mm and d3: 17 mm — is designed to interface precisely with mating drawbar mechanisms, so axial retention and torque transmission are maintained during heavy machining tasks. This technical layout supports stable tool retention, which is vital for repeatable machining accuracy. Precise dimensions for repeatable accuracy Key dimensions such as L1: 44.5 mm and L2: 16.4 mm define the effective length and engagement depth, helping to control stick-out and tool projection consistently across setups. The clear numerical specifications allow planners and engineers to verify compatibility with existing holders and spindles before purchase. By basing decisions on measurable values rather than estimates, workflow reliability is improved and setup variation is minimised. Practical integration into workshop workflows The compact design and standardised threading ensure this retention stud slots into conventional SK40 toolholding systems with minimal modification. As a delivery-ready industrial part, it supports inventory rationalisation for production and maintenance departments, reducing the variety of special components required. For further compatibility checks or to confirm suitability for specific machining operations, technical guidance is available from Metav Werkzeuge and its distribution channels. For procurement or technical confirmation of the TECWERK pull stud (SKU 2000832720NW) contact Metav Werkzeuge in Emmerich by phone +49 2822 7131930 or email info@metav-werkzeuge.com to secure fast supply from central stock. Technical data Article number: 2000832720NW Label: Anzugsbolzen ISO 7388/IIB SK40 m.Bohr.TECWERK Manufacturer: TECWERK Norm: ISO 7388/II Core specifications Thread: M16 Taper: SK40 d1: 18.95 mm d2: 12.95 mm d3: 17 mm d4: 7.35 mm L1: 44.5 mm L2: 16.4 mm Special features Form: B With central bore Packaging unit: 1 FAQ Which standard does this pull stud conform to? The TECWERK pull stud is manufactured to ISO 7388 / II Form B and is intended for use where that standard is specified, reference SKU 2000832720NW. Is the retention stud compatible with SK40 spindles? Yes — the component is specified for SK40 taper interfaces and uses an M16 thread for drawbar engagement, suitable for standard SK40 toolholding systems. What is the purpose of the central bore in this design? The central bore enables secure drawbar engagement and can allow internal coolant or lubrication routing where the machine’s spindle and toolholder design provide such functionality. What are the critical dimensions to check for compatibility? Key dimensions to verify are d1: 18.95 mm, d2: 12.95 mm, L1: 44.5 mm and L2: 16.4 mm; these define the engagement geometry of the TECWERK pull stud (SKU 2000832720NW). Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund
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