HY-PRO® CARB Performance Sub-Micrograin Carbide End Mills List HP421BN, HP441BN SPEEDFEED CARBIDEP1093-1094TiAIN SHANK35˚h6 2 or 4 Flute, Inch Sizes, Ball End Milling Diameter Tolerance 3/64≤D≤1 +0 / -0.0015" HP421BN HP441BN EDP Number Mill Overall Length Shank List HP42BN1 (2 Flute) List HP441BN (4 Flute) Diameter Length of Cut Diameter TiAlN TiAlN D L Lc d HP421-0469-BN HP441-0469-BN 3/64 1-1/2 9/64 1/8 HP421-0625-BN HP441-0625-BN 1/16 1-1/2 3/16 1/8 HP421-0781-BN HP441-0781-BN 5/64 1-1/2 1/4 1/8 HP421-0938-BN HP441-0938-BN 3/32 1-1/2 5/16 1/8 HP421-1094-BN HP441-1094-BN 7/64 1-1/2 3/8 1/8 HP421-1250-BN HP441-1250-BN 1/8 1-1/2 1/2 1/8 HP421-1406-BN HP441-1406-BN 9/64 2 1/2 3/16 HP421-1562-BN HP441-1562-BN 5/32 2 9/16 3/16 HP421-1719-BN HP441-1719-BN 11/64 2 9/16 3/16 HP421-1875-BN HP441-1875-BN 3/16 2 5/8 3/16 HP421-2031-BN HP441-2031-BN 13/64 2-1/2 5/8 1/4 HP421-2188-BN HP441-2188-BN 7/32 2-1/2 5/8 1/4 HP421-2500-BN HP441-2500-BN 1/4 2-1/2 3/4 1/4 HP421-2812-BN HP441-2812-BN 9/32 2-1/2 3/4 5/16 HP421-3125-BN HP441-3125-BN 5/16 2-1/2 13/16 5/16 HP421-3438-BN HP441-3438-BN 11/32 2-1/2 7/8 3/8 HP421-3750-BN HP441-3750-BN 3/8 2-1/2 1 3/8 HP421-4062-BN HP441-4062-BN 13/32 2-3/4 1 7/16 HP421-4375-BN HP441-4375-BN 7/16 2-3/4 1 7/16 HP421-5000-BN HP441-5000-BN 1/2 3 1 1/2 HP421-5625-BN HP441-5625-BN 9/16 3-1/2 1-1/8 9/16 HP421-6250-BN HP441-6250-BN 5/8 3-1/2 1-1/4 5/8 HP421-6875-BN HP441-6875-BN 11/16 4 1-3/8 3/4 HP421-7500-BN HP441-7500-BN 3/4 4 1-1/2 3/4 HP421-8750-BN HP441-8750-BN 7/8 4 1-1/2 7/8 HP421-1000-BN HP441-1000-BN 1 4 1-1/2 1 Packed: 1 pc. Available TiAlN coating only. OSG's Performance & Savings Want to turbo-charge performance? Try EXOCARB® WXL® - List 3610 (p. 737) or EXOCARB® WXS® - List 4430 (p. 780) Work Material P M K N S H Chart Carbon Steels Alloyappliesto all listLownumbers1010above1018Med.10351045HighSteelsDie10654140Steels4340Stainless SteelsCast30040017-4 PHIronAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-5050-70HRCHRCHRC - good best 860 HY-PRO® CARB Ball End WWW.OSGTOOL.COM