Machining, LS-NPTin low-speed LS-SP-S- NPTtapping are INT-NPTa INT-S-NPTNPTFLS-NPTFRpMac PShining, in lo SP-PSw/middle sp Geed tapping PFarea SP-PFLS-PS
HSSHSSHSS OXHSS OXHSSHSSHSSHSSHSSHSSHSSHSSHSS
For Amer pipe t Long,forgican taper hreads eneral useFor America thre For stainless stn taper pipe ads eel, interruptedFor American Dryseal taper pipe threads; For general useFor American Dryseal taper pipe threads Long, for general useFor parallel pipe threads; For general useFor parallel pipe threads; Long, forgeneral use
⑧-85⑧-88⑧-89⑧-91⑧-92⑧-96⑧-40⑧-41⑧-45⑧-49⑧-70⑧-74⑧-44
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Tap material Name For American taper pipe threads; For general use

Bored Hole Shape For Metric Threads For Unified Threads For Whitworth Threads For Screw Threads used on Sewing Machines

For Miniature Threads For Trapezoidal Threads

25~35HRCHeat treated steel
35~45HRCHeat treated steel
45~55HRCHeat treated steel
55~63HRCHeat treated steel

SKD Tool steels

FCCast irons◆◎◆◎◆◎◆◎
FCDDuctile cast irons◆○◆○◆○◆○
CuCopper
BsBrass
BsCBrass castings◆◎◆◎

PB Bronze AL Wrought aluminum AC, ADC Wrought aluminum Mg Magnesium alloy die castings

ZDC Zinc alloy die castings Titanium alloys Nickel base alloys