Tap Dimensions - Inch

Thread Size Over
all
lgth
A
Thread
lgth
B
Sq
lgth
C
Shank
Dia.
D
# OF FLUTES   H Limits
Sq
Size
Str.
Flute
S/P
Plug
S/F
Bott
Tap
Style
3B 2B
Unified Coarse
1 (.073)-64 1-13/16 1/2 3/16 .141 .110 3 2 2 1 H1 H2
2 (.086)-56 1-7/8 9/16 3/16 .141 .110 3 2 2 1 H1 H2
3 (.099)-48 1-15/16 5/8 3/16 .141 .110 3 2 2 1 H1 H2
4 (.112)-40 2 11/16 3/16 .141 .110 3 2 2 1 H1 H2
5 (.125)-40 2-1/8 3/4 1/4 .168 .131 3 2 3 1 H1 H2
6 (.138)-32 2-3/8 7/8 1/4 .194 .152 3 2 3 1 H2 H3
8 (.164)-32 2-3/8 15/16 9/32 .220 .165 3 2 3 1 H2 H3
10 (.190)-24 2-1/2 1 5/16 .255 .191 3 2 3 2 H2 H3
12 (.216)-24 2-23/32 1-1/8 3/8 .318 .238 3 2 3 2 H2 H3
1/4 (.2500)-20 2-23/32 1-1/8 3/8 .318 .238 3 2 3 2 H2 H3
5/16 (.3125)-18 2-15/16 1-1/4 7/16 .381 .286 4 3 3 2 H3 H4
3/8 (.3750)-16 3-3/8 1-21/32 7/16 .367 .275 4 3 3 3 H3 H4
7/16 (.4375)-14 3-19/32 1-21/32 1/2 .429 .322 4 3 4 3 H3 H4
1/2 (.5000)-13 3-13/16 1-13/16 9/16 .480 .360 4 3 4 3 H3 H4
9/16 (.5625)-12 4-1/32 1-13/16 5/8 .542 .406 4 3 H3 H4
5/8 (.6250)-11 4-1/4 2 11/16 .590 .442 4 3 H3 H4
3/4 (.7500)-10 4-11/16 2-7/32 3/4 .697 .523 4 3 H3 H5
7/8 (.8750)-9 5-1/18 2-1/2 13/16 .800 .600 4 3 H3 H5
1 (1.000)-8 5-3/4 2-9/16 1 1.021 .766 4 3 H4 H6
1-1/8 (1.1250)-7 6-1/16 3 1-1/16 1.108 .831 4 3 H4 H6
1-1/4 (1.2500)-7 6-3/8 3 1-1/8 1.233 .925 4 3 H4 H6
1-3/8 (1.3750)-6 6-11/16 3-3/16 1-1/8 1.305 .979 6 3 H6 H8
1-1/2 (1.5000)-6 7 3-3/16 1-1/4 1.430 1.072 6 3 H6 H8
UNIFIED FINE
2 (.086)-64 1-7/8 9/16 3/16 .141 .110 3 2 2 1 H1 H2
3 (.099)-56 1-15/16 5/8 3/16 .141 .110 3 2 2 1 H1 H2
4 (.112)-48 2 11/16 3/16 .141 .110 3 2 2 1 H1 H2
6 (.138)-40 2-1/8 3/4 1/4 .168 .131 3 2 3 1 H1 H2
8 (.164)-36 2-3/8 15/16 9/32 .220 .165 3 2 3 1 H1 H2
10 (.190)-32 2-1/2 1 5/16 .255 .191 3 2 3 2 H2 H3
1/4 (.2500)-28 2-23/32 1-1/8 3/8 .318 .238 3 2 3 2 H2 H3
5/16 (.3125)-24 2-15/16 1-1/4 7/16 .381 .286 4 3 3 2 H2 H3
3/8 (.3750)-24 3-5/32 1-7/16 13/32 .323 .242 4 3 3 3 H2 H3
7/16 (.4375)-20 3-3/8 1-21/32 7/16 .367 .275 4 3 3 3 H3 H4
1/2 (.5000)-20 3-19/32 1-21/32 1/2 .429 .322 4 3 4 3 H3 H4
9/16 (.5625)-18 3-13/16 1-13/16 9/16 .480 .360 4 3 H3 H4
5/8 (.6250)-18 4-1/32 1-13/16 5/8 .542 .406 4 3 H3 H4
3/4 (.7500)-16 4-15/32 2 11/16 .652 .489 4 3 H3 H4
7/8 (.8750)-14 5-1/8 2-1/2 13/16 .800 .600 4 3 H3 H4
1 (1.0000)-14 5-7/16 2-9/16 7/8 .896 .672 4 3 H4 H6
1 (1.0000)-12 5-7/16 2-9/16 7/8 .896 .672 4 3 H4 H6
1-1/8 (1.1250)-12 5-3/4 2-9/16 1 1.021 .766 6 3 H4 H6
1-1/4 (1.2500)-12 6-1/16 3 1-1/16 1.108 .831 6 3 H4 H6
1-3/8 (1.3750)-12 6-3/8 3 1-1/8 1.233 .925 6 3 H4 H6
1-1/2 (1.5000)-12 6-11/16 3-3/16 1-1/8 1.305 .979 6 3 H4 H6

 

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