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