Acme Tap Drill Sizes - Reference Table from Victor Machinery

TAP DRILL SIZES FOR ACME TAPS

Recommended tap drill sizes (for appx. 90% thread) for Acme Taps
provided by:
VICTOR MACHINERY EXCHANGE, INC.
12155 Stephens Road, Warren, MI 48089-3962
Call Toll Free: (800) 723-5359
Shop online at www.victornet.com

Call or email us for all Acme Taps
For anything but a standard size tandem tap, please specify:
1. Diameter and threads per inch
2. Material you are cutting
3. Through hole or blind hole
4. The length of the thread to be cut
5. Right hand or left hand thread


Standard Acme Tap Sizes
TAP SIZE	DRILL SIZE	DRILL SIZE(approximate)
3/8 - 12	.300"	N
7/16 - 12	.3625	9.2mm
1/2 - 10	.410	10.4mm
5/8 - 8	.5125	13mm
3/4 - 6	.600	39/64
7/8 - 6	.725	23/32
1" - 5	.820	13/16
1-1/8 - 5	.945	15/16
1-1/4 - 5	1.070	1-5/64
1-1/2 - 4	1.275	1-9/32

Follow this link to order right hand and left hand tandem acme taps.
Check out Victor Machinery's extensive selection of taps and dies.

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