55° Thread Measuring Attachment For 4–11 TPI Threads, Set Of 9 - Microtech Metrology

Take advantage of a compact, workshop-ready solution that combines a true 55° Whitworth profile, coverage for 4–11 TPI and a nine-piece set for quick thread verification; order directly via Metav Werkzeuge or consult the team for application support.

Measuring Attachment BSF 55° — thread inspection attachment, 4–11 TPI, 9-piece set (Microtech Metrology)

The Measuring Attachment BSF 55° is a compact thread-profile accessory designed for fast verification of BSF/Whitworth threads across the common 4–11 TPI range in production and service environments.

• 55° Whitworth thread profile for BSF inspection
• Covers 4–11 TPI range for common fine threads
• Supplied as a 9-piece precision set
• Microtech Metrology traceable accessory

Faster, repeatable checks for thread inspection

This accessory is intended to speed up routine thread checks by offering a dedicated 55° profile that corresponds to the Whitworth-based BSF form; the combination of a discrete 4–11 TPI range and a 9-piece set enables rapid selection of the correct gauge for the workpiece. By using a dedicated profile rather than improvised methods, inspection throughput increases and error sources tied to subjective comparison are reduced. The attachment is suited for inline usage as an accessory to existing measuring stands and comparators, converting a visual or tactile check into a repeatable verification step and supporting consistent production quality.

Clear technical basis for decision-making

The 55° angle is the defining geometric parameter of the thread form and ensures the profile matches BSF/Whitworth flanks; this alignment removes ambiguity when assessing form fit and thread condition. The designation 4–11 TPI specifies threads per inch, a common imperial metric for fine British threads, and the set of nine discrete sizes covers the typical workshop spectrum. Using the attachment simplifies the check to a go/no‑go style assessment or a profile-match inspection, which shortens measuring cycles and reduces rework through earlier detection of damaged or incorrect threads.

Integrates with workshop process and documentation

Delivered as a compact set, the accessory fits into routine metrology workflows as a repeatable instrument for production, maintenance and incoming inspection tasks. The form factor and set configuration reduce tool changes and help maintain a tidy inspection bench, while compatibility with established measuring fixtures allows easy retrofitting. Where traceability is required, the accessory can be documented as part of the inspection kit; its clear labelling and SKU simplify inventory management and ordering from stock suppliers.

For reliable BSF thread verification, contact Metav Werkzeuge for supply and application advice — Microtech Metrology accessories and the 9-piece BSF 55° set are available from Emmerich; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 141377291T
• GTIN: 4061905458606
• Name: Measuring attachment (BSF 55°)
• Range: 4–11 TPI
• Pieces per set: 9
• Angle: 55°
• Set: yes

Facts

• TPI range: 4–11
• Pieces: 9
• Angle: 55°

Special features

• BSF / Whitworth 55° thread profile
• Accessory for thread inspection instruments
• Supplied as a matched nine-piece set

FAQ

What thread range does the attachment cover?
The attachment covers the common BSF range from 4–11 TPI, supplied as a matched nine-piece set for discrete checks.

Which thread form is represented by the 55° profile?
The 55° profile corresponds to the Whitworth-based BSF thread form; the attachment reproduces the flank angle used for BSF inspection.

Is the set suitable for production and workshop use?
Yes, the nine-piece set is designed for workshop and production inspection tasks and integrates with standard measuring fixtures as an accessory.

Manufacturer / Responsible: Microtech, Nizhneyurkovska str., 45a, 04080 Kyiv, Ukraine, tool@microtech.tools