National Coarse (UNC) Taps

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UNC (Unified National Coarse) HSS Taps These standard style taps have straight flutes of a number specified as either standard or optional. Hand taps are for general purpose applic ations such as production tapping or hand tapping operations. Taper, plug and bottoming styles provide versatility in tough materials, blind and through holes. Don't forget to check your correct drill size and use a good cutting lubricant, such as our trefolex paste TAP DRILL SIZES - INCH SIZES - NATIONAL COARSE (Sizes suggested are for approx. 75% thread) ---------------------------- TAP DRILL SIZE SIZE ---------------------------- #1-64 #53 #2-56 #51 #3-48 5/64" #4-40 #43 #5-40 #38 #6-32 #36 #8-32 #29 #10-24 #25 #12-24 #17 1/4-20 #7 5/16-18 F 3/8-16 5/16 7/16-14 U 1/2-13 27/64 9/16-12 31/64 5/8-11 17/32 3/4-10 21/32 7/8-9 49/64 1"-8 7/8 1-1/8-7 63/64 1-1/4-7 1-7/64 1-1/2-6 1-11/32 1-3/4-5 1-35/64 2"-4-1/2 1-25/32 ----------------------------Drills are sold separately CLICK HERE Show more