BS 5307:1976

Foreword
Co-operating organizations
Specification
1 Scope
2 References
3 Nomenclature
4 Material
5 Hardness
6 Marking
Tables
1 Basic ball-lock punches, light and heavy duty
2 Basic ball-lock light duty perforating punch, round
3 Basic ball-lock light duty perforating punch blank,
    round
4 Basic ball-lock light duty pilot punch, round
5 Basic ball-lock light duty ejector perforating
    punch, round
6 Basic ball-lock light ejector perforating punch
    blank, round
7 Basic ball-lock light duty perforating punch, oblong
8 Basic ball-lock light duty perforating punch, square
9 Basic ball-lock light duty perforating punch,
    rectangular
10 Basic ball-lock light duty ejector perforating
    punch, oblong
11 Basic ball-lock light duty ejector perforating
    punch, square
12 Basic ball-lock light duty ejector perforating
    punch, rectangular
13 Basic ball-lock heavy duty perforating punch, round
14 Basic ball-lock heavy duty perforating punch blank,
    round
15 Basic ball-lock heavy duty pilot punch, round
16 Basic ball-lock heavy duty ejector perforating
    punch, round
17 Basic ball-lock heavy duty ejector perforating
    punch blank, round
18 Basic ball-lock heavy duty perforating punch, oblong
19 Basic ball-lock heavy duty perforating punch, square
20 Basic ball-lock heavy duty perforating punch,
    rectangular
21 Basic ball-lock heavy duty ejector perforating
    punch, oblong
22 Basic ball-lock heavy duty ejector perforating
    punch, square
23 Basic ball-lock heavy duty ejector perforating
    punch, rectangular
Figure
1 Terminology

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

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.