Originally Posted by
Paul Jones
...This also gives me an idea for creating a pipe thread checker....
You're going to need a really big board for your checker.
Code:
PIPE THREADING DATA
S=NOMINAL PIPE SIZE (in)
T=THREADS PER INCH
D=DIAMETER (in)
TD=TAP DRILL
S T D TD
------------------------------------------------------------------------------
AMERICAN STANDARD TAPER PIPE
1/16 27 0.3125 D
1/8 27 0.405 R
1/4 18 0.540 7/16
3/8 18 0.675 37/64
1/2 14 0.840 23/32
3/4 14 1.050 59/64
1 11.5 1.315 1-5/32
1-1/4 11.5 1.660 1-1/2
1-1/2 11.5 1.900 1-47/64
2 11.5 2.375 1-7/32
2-1/2 8 2.875 2-5/8
3 8 3.500 3-1/4
3-1/2 8 4.000 3-3/4
4 8 4.500 4-1/4
4-1/2 8 5.000 4-3/4
5 8 5.563 5-9/32
6 8 6.625 6-11/32
7 8 7.625
8 8 8.625
9 8 9.625
10 8 10.750
12 8 12.750
AMERICAN STANDARD STRAIGHT PIPE
1/8 27 0.405 S
1/4 18 0.540 29/64
3/8 18 0.675 19/32
1/2 14 0.840 47/64
3/4 14 1.050 15/16
1 11.5 1.315 1-3/16
1-1/4 11.5 1.660 1-33/64
1-1/2 11.5 1.900 1-3/4
2 11.5 2.375 2-7/32
2-1/2 8 2.875 2-21/32
3 8 3.500 3-9/32
3-1/2 8 4.000 3-25/32
4 8 4.500 4-9/32
4-1/2 8 5.000 4-25/32
5 8 5.563 5-11/32
6 8 6.625 6-13/32
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