Tap and Drill Chart Tap and Drill Sizes Metric Tap and Drill Chart NPT Tap Drill Chart NPS Tap Drill Chart Screw Machine Tap Size Chart Special Tap and Drill. * Permisable values for thread Class 3A # Description Value (Inch) Value (mm) es Allowance 0 (Ref) 0 (Ref) d Major Diameter 0.1069 - 0.112 2.715 - 2.845 d 2 Pitch Diameter 0.0939 - 0.0958 2.385 - 2.433 d 3 Minor Diameter Jobber Length Drill Bit Chart Screw Machine (Stub) Drill Bit Chart Taper Length Drill Bit Chart Bimetal Hole Saw RPM Chart Carbide Tipped Hole Cutter RPM Chart Tap Resources. For calculations of different engagement length use the Thread Calculator They are ideal for aluminum, brass, copper, steel and soft metals. * Values are calculated for Length of engagement of 5xPitch. Thread forming STI taps are used to form internal threads by displacing the metal without producing chips in large holes. Drill HT 800 WP Grooving Gun Drill EB80 Gun Drill EB100 Gun Drill EB800 Gun Drill ZB80 End Mill Tap Reamer Stepped Reamer View all. (UNR Only) 0.0815 (Ref) 2.07 (Ref) α Varation of 30° anngle (+/-) 1.75 (Ref) 44.45 (Ref) P Varation of pitch (+/-) 0.0007 (Ref) 0.018 (Ref) Tap Chart Form Threads - provides tap sizes and drill sizes for form threads. Achieve precise and consistent results with our range of form taps.
* Permisable values for thread Class 2A # Description Value (Inch) Value (mm) es Allowance 0.0008 (Ref) 0.02 (Ref) d Major Diameter 0.1061 - 0.1112 2.695 - 2.824 d 2 Pitch Diameter 0.0925 - 0.095 2.35 - 2.413 d 3 Minor Diameter
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