Precision Twist Drill H.S.S. Bright Finish Jobbers Length Twist Drill, Size K, .281″ Decimal Size, 4-1/4″ Overall Length

• H.S.S. – High Speed Steel
• Hardness: 58 to 60 RC
• 118 point angle and standard web thickness.
• Bright finish drills can be used in a wide range of materials
• For most general purpose drilling operations.
• Generally preferred for machining non-ferrous and non-metallic materials and alloys including: aluminum, magnesium, zinc, brass, bronze, and other non-ferrous materials and alloys
• Used for non-metallic materials, such as plastics, wood, composite materials.
• Suitable use in portable or stationary machine tools, hand held manual drills, and for many other applications, under a range of different operating conditions.
• To achieve the best performance and optimal tool life, suitable lubricating/cutting oils or appropriate coolant fluids are recommended for most drilling operations.
• Finish Coating: Bright
• Ground from the solid.
• 2 Flutes
• Flute Shape: Helical
• Shank Style: Straight Shank
• Cutting Direction: Right Hand
• Workpiece Material Range: Non-Ferrous, Cast Iron, Plastics

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