... in decimal inches. Standard metric drill sizes. Standard metric drill sizes used
for metric taps of the size indicated in the tap size column.
Machine Screw Size, Threads Per Inch, Minor Dia, Tap Drills, Clearance Hole
Drills. Alum, Brass, & Plasitcs. 75% Thread. Stainless Steel, Steels & Iron.
Tap Drill. Clearance Drill. Metric Tap &. Clearance Drill. Sizes. 75% Thread for.
Aluminum, Brass,. & Plastics. 50% Thread for. Steel, Stainless,. & Iron. Close Fit.
Taps drill sizes , inch and metric , and tap drill calculator.
Machinist Metric ISO Screw Thread Tap - Drill Size Chart - Drill Size Chart.
50% vs 75% tap drill sizes: 100% engagement of a male and female thread
means ... Many tapping charts will have two types of clearance drills: tight and
engineering.purdue.edu/ME463/Course Documents/Design Resources/starrett-inch-metric-tap-drill.pdf
Drill Size. Decimal. eQUiValent tap Size. 80 .0135. 1. 79 .0145. 64 .0156. 78 .
0160. 77 .0180. 76 .0200. 75 .0210. 74 .0225. 73 .0240. 72 .0250. 71 .0260.
There are six categories of standard taps. We have broken down the drill size
recommendations into those six categories which appear below ...
Tap size. NF/NC UNF/UNC. Threads per inch. Basic major dia (inches) ... minor
dia of ext. threads (inches), Basic minor dia of int. threads (inches). Drill size.
Tap Drill Chart. 129. Tap Drill Chart (Standard 2B). Nominal. Pipe Tap. Size. NPT
& NPTF w/o Reamer w/Reamer. 1/16-27. C. A. 1/8-27. Q. 21/64. 1/4-18. 7/16.