d k S. T. I. EXOTAP ® VC-10 Ni SCREW THREAD INSERT Ideal for Difficult to Machine Materials List 315Ni VC10 V STI V-HL-Ti-SFT, Spiral Fluted, Modified Bottom (2.5P-3P) Lc Ln L lk Tap Size ThreadLimit No. ofFlutes EDP Number Overall Thread Neck Shank Square SquareModified BottomLengthLengthLengthDia.WidthLength(2.5P-3P) V L Lc Ln d k lk 2 - 56 UNC4 - 40 UNC H2 3152010831520208 1.88 0.5592.000.688 -- 0.140 0.109 0.188 6 - 32 UNC8 - 32 UNC 3152030831520408 2.38 0.8700.937 -- 0.194 0.151 0.2510.2200.1640.279 10 - 32 UNF1/4 - 28 UNF H3 3 31520508 2.50 1.000 - 0.255 0.190 0.311315206082.720.5001.1250.3170.2380.374 5/16 - 24 UNF 31520708 2.94 0.555 1.251 0.380 0.285 0.437 3/8 - 24 UNF 31520808 3.16 0.625 1.712 0.322 0.242 0.405 7/16 - 20 UNF1/2 - 20 UNF H4 31520908 3.38 0.712 1.933 0.367 0.274 0.437315210083.590.7671.9720.4290.3220.500 Packed: 1 pc. Available V coating only. Work Material P M K N S H Carbon Steels AlloyList No.Low10101018Med.10351045HighSteelsDie10654140Steels4340Stainless SteelsCast30040017-4 PHIronAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-5050-70HRCHRCHRC 315Ni SFM 8-20 8-15 8-15 15-35 10-20 good best WWW.OSGTOOL.COM STI Taps 603