D d D d AT-1 Advanced Performance One Pass Thread Mill List 16631 SPEEDNEWFEEDP679CARBIDEEgiAs11˚ SHANKh6 AT-1, NPTF Type 3 Type 4 Lc L1 L Lc L Cutter OverallSizeThreadsDiameterPer InchLengthLengthof CutNeckLengthShankDiameterNo. ofFlutesType EDP Number D L Lc L1 d EgiAs 1/16 or 1/81/8 27 0.2230.302 3 0.407 0.480- 1/45/16 4 3 166310001741663100117 1/4 or 3/83/8 18 0.3810.459 3 1/2 0.611 0.720 1/2 5 3 16631002171663100317 1/2 or 3/4 14 0.6171 thru 211-1/20.7374 0.7860.957 -- 5/83/4 6 4 16631004171663100517 Packed: 1 pc. Available in EgiAs coating only. ATP For internal and external threads. For more information on thread mill applications, including ThreadPro software, visit: www.osgtool.com/ThreadPro. Work Material P M K N S H Carbon Steels AlloyList No.Low10101018Med.10351045HighSteelsDie10654140Steels4340Stainless SteelsCast30040017-4 PHIronAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-5050-70HRCHRCHRC 16631 good best WWW.OSGTOOL.COM Thread Mills 361