Triumph H.S.S. 135 Split Point Jobbers Length Twist Drill, 5/16″ Size, .3125″ Decimal Diameter, 3-3/16″ Flute Length, 4-1/2″ Overall Length

• H.S.S. – High Speed Steel
• Hardness: 58 to 60 RC
• Unique flute design for superior material removal.
• Special black bronze coating reduces friction allows for higher speeds.
• Excess heat generation during heavy-duty applications is offset by the coating.
• Designed for drilling higher tensile, tougher materials.
• Good for drilling on curved surfaces.
• Suitable for machining workpieces made up of Steel, Non-Ferrous, Cast Iron.
• Best suited in alloy steels.
• Ideal for use in CNC automated machines.
• Excellent for portable drilling also.
• Premium grade high-speed steel construction.
• 135 split point geometry (over 1.5mm).
• Lower helix angle of 30 wraps slowly and is used in drilling hard materials.
• Two-flutes design with straight body shank.
• Right hand (clockwise) cutting direction.
• Workpiece Material Range: Steel, Non-Ferrous, Cast Iron, Plastics

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