British Standards Institution

Source:: ISO
Committee:: W/- - Miscellaneous Standards
Categories:: Forging equipment. Presses. Shears
Comment period start date:: 18/07/2025
Comment period end date:: 10/09/2025
Number of comments:: 0

Comment by:

10th Sep

Scope

This document specifies the basic dimensions and tolerances, in millimetres of trombone head punches. This document gives examples of materials and their hardness, and specifies the designation of punches in accordance with this document. These punches are available with shank diameters, D, from 4 mm to 20 mm.

The main use of the punches specified in this document is for punching holes in steel sheet. They may also be used for punching in other materials.

The setting up system for trombone head punches is defined in Annex A.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

14/05/2025

3. Public Comments

Public Comments start date:

18/07/2025

Public Comments end date:

10/09/2025

Learn more about the standards development process

Standards Development

BS ISO 24987 ISO 24987 Tools for pressing. Trombone head punches

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