Bolts Main Page | Pipe Drill Sizes

Tap Drill Sizes


Tap
Size
Approximate
Tap Drill Size
Tap
Size
Approximate
Tap Drill Size
Tap
Size
Approximate
Tap Drill Size
75% 70% 60% 75% 70% 60% 75% 70% 60%
0-80 #56 #56 3/64 8-36 #29 #29 #28 1/2-20 29/64" 29/64" .461
1-64 #54 #54 #53 10-24 #25 #24 #22 9/16-12 31/64" 31/64" 1/2"
1-72 #54 #54 #53 10-32 #21 #20 #19 9/16-18 33/64" 33/64" .519
2-56 #51 #51 #50 12-24 #17 #16 #14 5/8-11 35/64" 35/64" .554
2-64 #50 #50 #49 12-28 #15 #14 #12 5/8-18 .575 .575 37/64"
3-48 #48 #47 #46 1/4-20 #7 #6 #4 11/16-16 .631 .631 41/64"
3-56 #47 #46 #45 1/4-28 #3 #3 #2 3/4-10 21/32" 21/32" 43/64"
4-40 #44 #44 #43 5/16-18 #F #G #H 3/4-16 11/16" .693 45/64"
4-48 #43 #42 #3/32" 5/16-24 .272 .275 9/32" 7/8-9 49/64" .774 .788
5-40 #39 #38 #37 3/8-16 5/16" #O #P 7/8-14 .805 13/16" .819
5-44 #38 #38 #37 3/8-24 #Q #R 11/32" 1.000-8 7/8" .886 29/32"
6-32 #36 #35 #33 7/16-14 #U 3/8" .382 1.000-14 29/32" 59/64" 15/16"
6-40 #34 #33 #32 7/16-20 #W 25/64" #X
8-32 #30 #29 #28 1/2-13 .425 .430 7/16"




Smith Fastener Company • 3613 East Florence Avenue, Bell, California, 90201
Phone: ( 323 ) 587-0382 • FAX: ( 323 ) 587-8712 • E-mail: [email protected]
Copyright © 2009 by Smith Fastener Company

Hitch Pins | Construction/Lifting | Blind Rivets | Dowel Pins | Cotter Pins | Nuts, Bolts, Screws, Washers
Threaded Inserts | Anchors | Pins | Automotive | Weatherhead Pipe Fittings | Cutting Tools