Description
Spiral point tap with chamfer form B with a 3.5-5xP plug lead, for British Association thread BA 8 with 0.43mm pitch and Normal class of fit, dimensions according to ISO 529 standard with 2.8mm shank and 2.2mm square drive, HSS with steam tempered surface finish for 2.5xD through hole threading in plain carbon and alloy steel and ferritic and austenitic stainless steel.
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