TMPG_US-EN

Tap Drill Chart | Unified National

UNC

UNF

Pitch (TPI)

Drill Size (inch)

Pitch (TPI)

Drill Size (inch)

Ø

#0 #1 #2 #3 #4 #5 #6 #8

-

-

80 72 64 56 48 44 40 36 32 28 28 24 24 20 20 18 18 16 14 12 12 12 12 12 12 12

3/64

64 56 48 40 40 32 32 24 24 20 18 16 14 13 12 11 10

0.059 (#53) 0.067 (#51) 0.089 (#43) 0.099 (#39) 0.106 (#36) 0.136 (#29) 0.149 (#25) 0.173 (#17) 0.201 (#7) 0.257 (F) 5/64

0.059 (#53) 0.070 (#50) 0.081 (#46) 0.093 (#42) 0.104 (#37) 0.113 (#33) 0.136 (#29) 0.159 (#21) 0.180 (#15) 0.213 (#3) 0.272 (I) 0.332 (Q) 0.386 (W)

#10 #12 1/4 5/16

3/8

5/16

7/16

0.368 (U)

1/2

27/64 31/64 17/32 21/32 49/64

29/64 33/64 37/64 11/16 13/16 15/16 1-1/32 1-11/64 1-19/64 1-27/64 1-43/64 1-59/64

9/16

5/8 3/4 7/8

9 8 7 7 6 6 5

1

7/8

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

63/64 1-7/64 1-7/32 1-11/32 1-35/64 1-25/32

2

4-1/2

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