BS 5307:1976

This standard BS 5307:1976 Specification. Basic ball-lock punches is classified in these ICS categories:

• 25.120.99 Other chipless working equipment

This British Standard specifies dimensions for basic ball-lock light and heavy duty punches.

Light duty interchangeable punches are standard in round, oblong, square and rectangular shapes with punches available in 6.3 mm to 25.0 mm overall diameter shank sizes. Size of the locking ball in the retainer, ranges from 6.0 mm to 10.0 mm diameter. The light duty series will pierce up to 3.2 mm stock. Heavy duty interchangeable punches are standard in round, oblong, square and rectangular shapes, with punches available in 13.0 mm to 32.0 mm overall diameter shank sizes. Size of the locking ball in the retainer is 12.0 mm diameter.

NOTE The heavy duty series generally will pierce up to 9.0 mm stock in all but a few of the larger sizes.

Dimensions for basic ball-lock light and heavy duty punches.