d k S. T. I. GENERAL PURPOSE SCREW THREAD INSERT List 125 HSS BR STI Spiral Pointed, Plug (3.5P-4.5P) Lc Ln L lk Tap Size Thread No. of EDP Number Overall Thread Neck Shank Square SquarePlugLengthLengthLengthDia.WidthLengthLimitFlutes(3.5P - 4.5P) Bright L Lc Ln d k lk 2 - 56 UNC3 - 48 UNC H2 70026007003200 1.881.94 0.322 0.5590.618 4 - 40 UNC H14 - 48 UNF5 - 40 UNCH2 1820400 0.140 0.109 0.188182400070044002.000.3890.68870050002.120.7550.1670.131 6 - 32 UNC6 - 40 UNF H3H2 28 - 32 UNCH3 18248001830400 2.38 0.507 0.877 0.194 0.151 0.25170071002.120.3930.7590.1670.131182520018308002.380.5110.9400.2200.1640.279 8 - 36 UNF H210 - 24 UNCH310 - 32 UNFH2H3 70086001825600700980018258002.50 0.641 1.007 0.255 0.190 0.3117010700 1/4 - 20 UNC H2H31/4 - 28 UNFH2H35/16 - 18 UNCH45/16 - 24 UNFH2H33/8 - 16 UNCH41826400183200018266002.720.7001.1290.3170.238 0.374183220070147007015300701590070162002.940.7631.2510.3800.2850.437701710070174003.380.9401.3740.3670.274 3/8 - 24 UNF H2 3H37/16 - 14 UNCH470180007018300 3.16 0.881 1.314 0.322 0.242 0.40512500100125002003.591.0001.4720.4290.3220.500 7/16 - 20 UNF H3H4 1250030012500400 3.38 0.940 1.374 0.367 0.274 0.437 1/2 - 13 UNC H3H4 1250050012500600 3.81 1.090 1.562 0.480 0.359 0.562 1/2 - 20 UNF H3H4 1250070012500800 3.59 1.000 1.472 0.429 0.322 0.500 9/16 - 12 UNC H3H4 1250090012501000 4.03 1.090 1.562 0.542 0.405 0.625 Packed: 1 pc. EDP’s listed above are stocked standard, other coatings available upon request. Specify treatment at time of order. Work Material P M K N S H Carbon Steels AlloyList No.Low10101018Med.10351045HighSteelsDie10654140Steels4340Stainless SteelsCast30040017-4 PHIronAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-5050-70HRCHRCHRC 125 SFM 25-80 20-50 20-45 25-75 40-80 40-65 good best WWW.OSGTOOL.COM STI Taps 623