Outside Thickness Position of diameter basic dia D T ℓg D NPT (for blind hole) Spiral Fluted Taps Solid Round Dies for American Taper Pipe Threads Specification (for through hole) Spiral Fluted Taps Front face For icon explanation, refer to P.50 TYPE:1 (for through hole) Spiral Pointed Taps Hand Taps TYPE:2 TYPE:3 Carbide Taps Cemented Roll Taps Segment:3G Size Code D T ℓg Clearance Recess Type Stock (mm) (mm) (mm) holes For NPT Threads Simple Inspection Tools Special Thread Taps NPT1/16-27 TYJNT010NEBC 38 13 5 4 ○ 1 △ NPT1/8-27 TYJNT020NEBC 38 13 5 4 ○ 1 ○ NPT1/4-18 TYJNT040NEBC 38 18 8 5 ○ 2 ○ NPT3/8-18 TYMNT060NEBC 50 22 8 5 ○ 2 △ Pipe Taps NPT1/2-14 TYMNT080NEBC 50 22 10 6 2 △ NPT3/4-14 TYRNT120NEBC 63 24 10 6 3 △ NPT1 -11.5 TYUNT160NEBC 75 30 13 6 ○ 3 △ NPT1 1/4-11.5 TYUNT200NEBC 75 30 13.5 6 ○ 3 △ Thread Mills Dies Center Drills Centering Tools JIS ◎=Standard ○=Semi standard △=Made to order Di-18 For improvement, spec may change without advance notice. 629