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Tool Speed Calculator

Taper Pipe Size Solid Carbide Thread Mills
Series TMH-NPT and TMH-NPTF Internal and External Threads

 
 
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    CLICK TOOL NUMBERS TO ORDER
Standard Thread Size TPI D1* D1MAX* L L3 D Flutes EDP # NPT EDP # NPTF
1/16 & 1/8 27 0.217 0.248 2.5 0.5 0.25 3 22624 22630
1/4 & 3/8 18 0.275 0.32 2.5 0.75 0.375 4 22625 22631
1/2 & 3/4 14 0.438 0.5 2.5 1 0.5 4 22626 22632
1/2 & 3/4 14 0.438 0.5 3 1 0.5 4 22636 22651
1-2 11 1/2 0.55 0.62 2.75 1.125 0.625 4 22627 22634
1-2 11 1/2 0.55 0.62 3.5 1.125 0.625 4 22650 22639
D1 represents the small end diameter and D1MAX represents the large end diameter; helical NPT/NPTF thread mills are tapered.