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Tap Drill Chart | ACME General Purpose (Full Profile)

ACME

Pitch (TPI)

Nominal Ø

Min (inch)

Max (inch)

1/4

16 14 12 12 10

.1875 .2411 .2917 .3542 .4000 .5000 .5833 .7083 .8000 .9250

.1925 .2461 .2967 .3592 .4050 .5062 .5916 .7166 .8100 .9350

5/16

3/8

7/16

1/2 5/8 3/4 7/8

8 6 6 5 5 5 4 4 4 4 3 3 3 2 2 2 2 2

1

1-1/8 1-1/4 1-3/8 1-1/2 1-3/4 2-1/4 2-1/2 2-3/4 2

1.0500 1.1250 1.2500 1.5000 1.7500 1.9167 2.1667 2.4167 2.5000 3.0000 3.5000 4.0000 4.5000

1.0600 1.1375 1.2625 1.5125 1.7625 1.9334 2.1834 2.4334 2.5250 3.0250 3.5250 4.0250 4.5250

3

3-1/2

4

4-1/2

5

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