Thenominal size of a Pipe Tap is that of the pipe fitting to be tapped, not the actual size of the tap. The thread tapers 3/4 of an inch per foot. All Pipe Taps furnished with a 2-1/2 to 3-1/2 thread chamfer. NPT threads require the use of a 18-27 NPT : Pipe and Fitting Thread Dimensions and Tolerances. All the relevant data for this tread in one spot. 1/8-27 NPT : Pipe and Fitting Thread Dimensions and Tolerances. Tap Drill Size (T) 0.332: 8.433: 1/8-27 NPT - Internal (Fitting) Drawing. Overview Drawing. Profile Drawing. 1/8-27 NPT - Tolerances. Property Minimum Maximum TapDrill (mm) Thread Size. Tap Drill (mm) M4 x 0.35. 3.60. M10 x 0.75. 9.25. M16 x 1. 15.0. Thecorrect tap drill for a 3/4-14 NPT pipe thread is a #7 drill bit. This size drill bit will create the correct-sized hole to accommodate the tap. It is important to use the correct size drill bit in order to ensure that you have a strong and secure thread when you are finished. The 3/4 tap drill size is 13/16, and the drill bit that TapDrill Charts | British Standard Pipe Threads BSW BSPP BSPT Pipe Tap Size Pitch (TPI) Drill Size (inch) Pitch (TPI) Drill Size (inch) Pitch (TPI) Drill Size* (inch) 1/16 60 0.046 (#56) 28 0.261 (G) - - 1/8 40 0.098 (#40) 28 11/32 28 21/64 1/4 20 0.196 (#9) 19 29/64 19 7/16 5/16 18 1/4 - - - - 3/8 16 5/16 19 19/32 19 37/64 FVM8. Includessize of: 1/8" - 27 npt, 1/4" - 18 npt, 3/8" - 18 npt, 1/2" - 14 npt, 3/4" - 14 npt ; Versatile set suitable for both personal and professional use. Clean and Re-Thread Damaged or Jam Pipe Threads with Ease - Ideal for Pipe Fittings, DIYers, handymen, and professionals who need to repair damaged pipe threads. Revive Damaged Pipe 18 27 npt tap drill size. Best 1/4-18 npt drill sizeCutting tool selection: 2 misconceptions i had about all those drill sizes M5 rivnut 7mmBest 1/4-18 npt drill size. Al metal special metal partsDrill npt Iso standard thread-tap drill size chartM5 drill rivnut. Check Details Taps and dies drill sizes DrillSize Equivalents (in) Equivalents (mm) 1⁄16 " NPT: 27: 15/64: 0.2344: 5.9531: C: 0.242: 6.1468: 1/4: 0.25: 6.35: 1/8" NPT: 27: 21/64: 0.3281: 8.3344: Q: 0.332: 8.4328: 11/32: 0.3438: 8.7313: 1/4" NPT: 18: NPSFAmerican Pipe Thread ANSI B 1.20.1, American Thread, Pipe, Fitting. NPSF American Pipe Thread NPT Thread (USA) NPTF Thread (USA) NPSC Thread (USA) NPSF Thread (USA) Drill Size mm: TPI: Pitch mm: 1/16" - 27 NPSF: 7.582: 6.304: 27: 0.940: 1/8" - 27 NPSF: 9.929: 8.651: 27: 0.940: 1/4" - 18 NPSF: 13.236: DecimalEquivalents, Standard and NPT Drill Sizes, and Sheet Metal Thickness . Fraction (Clearance Hole Size or Thickness) Decimal (Clearance Hole Size or Thickness) Bolt, Screw, or NPT Fitting Size. Tap Drill Dia. (Fraction) Tap Drill Dia. (Decimal) Number Drill. Letter Drill. Drill Size Alum / Steel. Sheet Metal Gauge (Steel) .0135 . 80

1 4 npt thread drill size