8 1"-12 TAP DRILL SIZE # 56 (.046) # 53 (.059) # 53 (.059) # 50 (.070) # 50 (.070) # 47 (.078) # 46 (.081) # 43 (.089) # 42 (.093) # 39 (.099) # 36 (.106) # 33 (.113) # 29 (.136) # 25 (.149) # 21 (.159) # 7 (.201) # 3 (.213) "F...
Drill sizes are for 75% depth of thread. Metric tap and drill bit size table Tap sizes are shown as hole size – threads per mm (millimeter). Example 6mm-1.0 = 6mm hole, 1 threads per mm. TapMetric DrillImperial Drill 3 mm x 0.62.5 mm– ...
Let's start with an important fact-there isn't just one drill bit size to use for a given tap size. There are several. Moreover, the size recommended in most drill bit size charts is very often not the best size to use. The same is true of the size recommended on the tap and ev...
Suggested Tap Drill Sizes for British Standard Pipe Parallel (BSP)(BSPP) and British Standard Pipe Taper (BSPT) Nominal Size (inches) T P I Major Diameter (inches) Tapping Drill Size Tapping Drill Size BSP BSPT 1/16 28 0.304 6.6 mm Letter drill G 1/8 28 0.383 8.8 mm 8.4mm 11/32...
TAP DRILLSIZE 1-64 .0595 No. 53 2-56 .0700 No. 50 3-48 .0785 No. 47 4-40 .0890 No. 43 5-40 .1015 No. 38 6-32 .1065 No. 36 8-32 .1360 No. 29 10-24 .1495 No. 25 12-24 .1770 No. 16 1/4-20 .2010 No. 7 ...
Tap Drill Charts | British Standard Pipe Threads BSW BSPP BSPT Pipe Tap Pitch Drill Size Size (TPI) (inch) 1/16 60 0.046 (#56) 1/8 40 0.098 (#40) 1/4 20 0.196 (#9) 5/16 18 1/4 3/8 16 7/16 14 5/16 23/64 1/2 12 0.413 (Z) 9/16 12 17/32 5/8 11 35...
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ANSI Standard Vee-Thread Recommended Tap size and Drilled pilot Hole. INCH SIZES - NATIONAL COARSE THREAD SERIES TAP SIZEDRILL SIZE #0-803/64" #1-64#53 #2-56#51 #3-485/64" #4-40#43 #5-40#39 #6-32#36 #8-32#29 #10-24#25 ...
Below is a comprehensive drill and tap size chart for all drills, imperial and metric, and taps up to 1 inch. A pdf version is available as a quick reference. This list is incomplete; you can help by and tap size chart|action=edit expanding it. Diameter Diameter Fractional Drill wire ...
TDS: (Tap drill size) The size of the hole that must be drilled before a tapping operation. Imperial UN: (Imperial Unified National thread form) A standard that describes the shape of an internal or external thread using imperial inch dimensions. Making a thread that follow these specifications...