d k A-CHT Advanced Performance Coolant-Through Taps Designed for Cast Iron List 16615 NEW CARBIDE BR A-CHT, Coolant-Through, DIN Overall Length, Bottom (1.5P) Lc Ln L lk Tap Size ThreadLimit No. ofFlutes EDP NumberBottom(1.5P) DINOverallLengthThreadLengthNeckLength ShankDia. Square SquareWidthLength Bright L Lc Ln d k lk 12 - 24 UNC12 - 28 UNF H31/4 - 20 UNCH51/4 - 28 UNFH43 16615002001661500300166150040016615005000.500 0.944 0.220 0.165 0.2813.140.5981.1810.2550.1910.313 5/16 - 18 UNC H55/16 - 24 UNFH43/8 - 16 UNCH53/8 - 24 UNFH47/16 - 14 UNC7/16 - 20 UNF1/2 - 13 UNCH51/2 - 20 UNF416615006001661500700166150080016615009003.540.6650.3170.2380.3753.933.541.3770.7510.3800.2860.438166150100016615011003.930.858--0.3220.2420.406166150120016615013004.333.930.921--0.3670.2750.438 Packed: 1 pc. EDP's listed above are stocked standard, other coatings available upon request. ATP Specify treatment at time of order. Note: Reduce SFM 50% - 70% while using external coolant. Work Material P M K N S H Carbon Steels AlloyList No.Low10101018Med.10351045HighSteelsDie10654140Steels4340Stainless SteelsCast30040017-4 PHIronAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-5050-70HRCHRCHRC 16615 SFM 15-50 30-330 30-330 good best 554 Straight Fluted Taps WWW.OSGTOOL.COM