Specification Brand : HARFINGTON BulletPoint : High Speed Steel BulletPoint1 : Size - Cutting diameter: 27/64" (right hand); shank diameter: 27/64"; cutting length: 1"; total length: 2-3/4"; helix angle: 30 degree; cutting hardness: HRC53-55; number of flutes: 4 flutes. Make sure the end mill is suitable for the specific application and material being processed. BulletPoint10 : ISO No: APKT11T308PM BulletPoint2 : Material - TiAlN (Titanium Aluminum Nitride) coating provides high hardness, increased lubricity, and improved heat resistance. Performs well under high-temperature cutting conditions and provides good wear resistance. Micro-grain carbide mill bit has high hardness, high wear resistance, high strength, enhanced rigidity and high temperature resistance. BulletPoint3 : Features - Fully ground mirror body with high smoothness, 30 degree large helix angle for effective deburring and polishing, larger core diameter is not easy to break the edge. Precision ground cutting edges for clean, precise cuts. Universal chamfered round shank, good compatibility and easy to use. BulletPoint4 : Applications - Square end mill can create slots (keyways or internal grooves), straight or square edge features, flat smooth surfaces, holes or for roughing, finishing and side milling operations. It is a milling cutter for machining abrasive materials like carbon steel, alloy steel, and titanium. BulletPoint5 : Notes - Applicable machines: CNC machining center, engraving machine, precision engraving machine and other high-speed machines. Use a suitable coolant or lubrication method during milling operations to dissipate heat and prolong tool life. Select an appropriate feed rate and cutting speed. BulletPoint6 : Material: Tungsten Carbide BulletPoint7 : Insert Style: APET, APKT, APMT / Insert Size: 11T308 BulletPoint8 : Number of Flutes: 2 BulletPoint9 : Cutting Angle: 90 CutType : Square Nose CutType1 : Square CutType2 : Rounded CutType3 : Finishing EndCutType : Square End ExternallyAssignedProductIdentifier : 6975960332642 ExternallyAssignedProductIdentifier1 : 0000540424083 ExternallyAssignedProductIdentifier2 : 000540424083 FinishType : TiAlN IncludedComponents : End Mill box ItemName : HARFINGTON Carbide Square Nose End Mill Bit 27/64" Cut Dia 4 Flutes TiAlN Coated Milling Cutter for Hardened Steel Metal (27/64" Shank 1" Cut Length 2-3/4" Long 30 Degree Helix HRC53-55) ItemPackageDimensions_Height : 0.79 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 5 ItemShape : Square ItemTypeKeyword : square-nose-end-mills Manufacturer : HARFINGTON Material : Carbide ModelNumber : 404-2408W+404-6540(2) NumberOfCuttingEdges : 4 NumberOfFlutes : 4 NumberOfItems : 5 PartNumber : htf240618hh000022 ProductDescription : TiAlN (Titanium Aluminum Nitride) coating provides high hardness, increased lubricity, and improved heat resistance. Performs well under high-temperature cutting conditions and provides good wear resistance. Micro-grain carbide mill bit has high hardness, high wear resistance, high strength, enhanced rigidity and high temperature resistance. Fully ground mirror body with high smoothness, 30 degree large helix angle for effective deburring and polishing, larger core diameter is not easy to break the edge. Precision ground cutting edges for clean, precise cuts. Square end mill can create slots (keyways or internal grooves), straight or square edge features, flat smooth surfaces, holes or for roughing, finishing and side milling operations. It is a milling cutter for machining abrasive materials like carbon steel, alloy steel, and titanium. Applicable machines: CNC machining center, engraving machine, precision engraving machine and other high-speed machines. Universal chamfered round shank, good compatibility and easy to use. The longer the length of the tool clamped by the chuck, the better. Tips: Make sure the end mill is suitable for the specific application and material being processed. Use a suitable coolant or lubrication method during milling operations to dissipate heat and prolong tool life. Select an appropriate feed rate and cutting speed.