d k CC-SUS Variable Helix Tap for Stainless Steel List 16450 HSSE TiN Var.˚ CC-SUS-SFT, DIN Overall Length, Modified Bottom (2.5P-3P) Lc Ln L lk Tap Size Thread No. ofLimitFlutesEDP NumberModified Bottom DINOverallLengthThreadLengthNeckLengthShankDia. Square SquareWidthLength(2.5P-3P) TiN L Lc Ln d k lk 2 - 56 UNC 1645002562 1.77 0.142 0.472 3 - 48 UNC 1645003482 1.97 0.161 0.531 4 - 40 UNC4 - 48 UNF H25 - 40 UNC6 - 32 UNCH3 16450044021645004482164500540216450063220.197 0.7052.210.2010.7090.141 0.110 0.18916450063230.2480.783 6 - 40 UNF H28 - 32 UNCH3 1645006402164500832216450083232.48 0.252 0.827 0.168 0.131 8 - 36 UNF H2 210 - 24 UNCH310 - 32 UNFH216450083621645010242 0.252164501024316450103222.760.3270.9760.1940.1521645010323 12 - 24 UNC12 - 28 UNF H3 16450122431645012283 0.331 0.220 0.165 0.280 1/4 - 20 UNC H51/4 - 28 UNFH3H4 1645014203164501420516450142833.15 1.1770.398 0.255 0.191 0.3111645014284 5/16 - 18 UNC H3H55/16 - 24 UNFH3H4 1645056183164505618516450562433.54 0.445 1.378 0.318 0.238 0.3741645056244 3/8 - 16 UNC H3H53/8 - 24 UNFH3H47/16 - 14 UNCH3H537/16 - 20 UNFH3H516450381631645038165164503824316450382443.941.5350.5000.3810.2860.4373.541.3781645076143164507614516450762033.940.5711.7130.3230.2420.4061645076205 1/2 - 13 UNC H3H51/2 - 20 UNFH3H5 16450121331645012135164501220316450122054.330.614 1.933 0.367 0.275 0.4373.94 Packed: 1 pc. Available TiN coating only. *Tap drill size is 65%-70% of thread. *Recommended drill is EX-SUS-GOLD drills for stainless steel. Work Material P M K N S H Carbon Steels AlloyList No.Low10101018Med.10351045HighSteelsDie10654140Steels4340Stainless SteelsCast30040017-4 PHIronAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-5050-70HRCHRCHRC 16450 SFM 50-80 50-80 30-80 50-100 20-35 20-35 15-25 good best WWW.OSGTOOL.COM Spiral Fluted Taps 425