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Taper Pipe Tap Standards

TaperPipeTapStandards.pdf

Taper Pipe Tap Standards

Pipe Tap Size Threads Per Inch Size of Square

 

Overall Length

 

Tap Drill A.S.A.
1/16 [.062] 27 .234 2.125 D (.246)
1/8 [.125] 27 .234 2.125 R (.339)
1/8 [.125] 27 .328 2.125 R (.339)
1/4 [.250] 18 .421 2.437 7/16
3/8 [.375] 18 .531 2.562 37/64
1/2 [.500] 14 .515 3.125 45/64
3/4 [.750] 14 .679 3.250 59/64
1. [1.000] 11.5 .843 3.750 1-5/32
1-1/4 [1.250] 11.5 .984 4.000 1-1/2
1-1/2 [1.500] 11.5 1.125 4.250 1-47/64
2. [2.000] 11.5 1.406 4.500 2-41/64

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