NPT & NPS Tap Drill Chart Pipe Tap SizeNPT & NPTFNPS & NPSF Pitch (TPI)Drill Size (inch)Pitch (TPI)Drill Size (inch) 1/16 27 0.242 (C) – – 1/8 27 0.332 (Q) 27 0.348 (S) 1/4 18 7/16 18 29/64 3/8 18 9/16 18 19/32 1/2 14 45/64 14 47/64 3/4 14 29/32 ...
Drill bit is designed for use with Drill Drivers For best results use with cutting fluid Product Specifications Size1/4"-18 NPT Plug Tap & 7/16" Drill Bit Length7.75 in Weight0.24 lb Height0.625 in Width1.875 in Material CompositionBlack Oxide ...
NPT TAP-DRILL CHART DRILL THIS SIZE HOLE DECIMAL DRILL NEAREST INCHES SIZE FRACTION TO TAP FOR THIS BOLT OR SCREW .3390" Ltr. R none 1/8-27 NPT .4375" 7/16" 7/16" 1/4-18 NPT .5781" 37/64" 37/64" 3/8- 8 NPT .7031" 45/64" 45/64" 1/2-14 NPT .9219" 59/64" 59/...
(mm) 0.313 0.405 0.540 0.675 0.840 1.050 1.315 1.660 1.900 2.375 2.875 3.500 4.000 4.500 5.000 5.563 6.625 8.625 10.750 12.750 14.000 16.000 Tap Drill (Inches) R 7/16 37/64 23/32 59/64 1-5/32 1-1/2 1-47/64 2-7/32 2-5/8 3-1/4 3-3/4 4-1/4 4-3/4 5-9/32 6-11/...
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