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ANSI B94.18.1 1977 Edition, January 1, 1977
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Punches - Basic Ball-Lock Light and Heavy Duty (Metric)
Includes all amendments and changes through Reaffirmation Notice
Additional Comments: W/D NO S/S
Page Count:32
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This standard covers the American National Standard Practice for basic metric ball-lock, light and heavy duty punches, including dimensions, tolerances, nomenclature, sizes and shapes.

Light-duty interchangeable punches are standard in round, oblong, square and rectangular shapes with punches available in 6.3 to 25.0 overall diameter shank sizes. Size of the locking ball in the retainer, ranges from 6.0 to 8.0 diameter. The light-duty series will pierce up to 3.2 stock.

Heavy-duty interchangeable punches are standard in round, oblong, square and rectangular shapes, with punches available in 13.0 to 32.0 overall diameter shank sizes. Size of the locking ball in the retainer is 12.0 diameter. The heavy-duty series generally will pierce up to 9.0 stock in all but a few of the larger sizes.