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ANSI B94.18 1987 Edition, January 1, 1987
Complete Document
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Punches - Basic Ball-Lock, Light and Heavy Duty
Includes all amendments and changes through Reaffirmation Notice
Additional Comments: W/D NO S/S
Page Count:35
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This Standard covers the American National Standard Practice for basic 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 ¼ in. to 1 in. overall diameter shank sizes. The size of the locking ball in the retainer ranges from ¼ in. to ⅜ in. diameter. The light-duty series will pierce up to ⅛ in. stock.

Heavy-duty interchangeable punches are standard in round, oblong, square, and rectangular shapes, with punches available in ½ in. to 1¼ in. overall diameter shank sizes. The size of the locking ball in the retainer is ½ in. diameter. The heavy-duty series generally will pierce up to ⅜ in. stock in all but a few of the larger sizes.