
Call us:
+1 (217) 579-8045Spiral point tap with a 3-6xP plug lead, for Unified National Fine thread UNF 1/4" with 28 TPI and 3B class of fit with H3 pitch diameter limits, dimensions according to ANSI standard with 0.2550" shank and 0.1910" square drive, HSS with TiN coating for 2.5xD through hole threading in ferritic, martensitic and austenitic stainless steel, non-ferrous metals and Fe-based, Ni-based and Co-based high-temperature alloys.