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High-Speed Steel Screw-Machine Length Drill Bits
Available13 products
High-speed steel screw-machine length drill bits provide more flexibility and absorb more shock and vibration than cobalt, powdered-metal, and carbide screw-machine length drill bits, making them suitable for use in manual drilling machines and handheld power tools. They may leave a rough finish on the hole. Screw-machine length drill bits are shorter than jobber length and maintenance length drill bits of the same size. Also called stub length drill bits, they provide more strength and rigidity and can drill straighter holes than longer drill bits. Their short length also allows them to access tight spaces where longer drill bits cannot fit.
Decimal Equivalent
Black-Oxide Finish Spiral-Flute High-Speed Steel Screw-Machine Length Drill Bits
These drill bits have a black-oxide finish that retains lubricants to improve the bits' wear resistance and chip flow. Black-oxide bits should only be used for drilling ferrous metals. Spiral-flute drill bits evacuate chips as the bits drill into a workpiece.
Decimal Inch + 135 ° Drill Bit Point Angle + Split Point
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Fractional Inch + 118 ° Drill Bit Point Angle + Conventional Point
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Fractional Inch + 135 ° Drill Bit Point Angle + Split Point
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Letter + 135 ° Drill Bit Point Angle + Split Point
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Wire + 135 ° Drill Bit Point Angle + Split Point
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Bright Finish Parabolic-Flute High-Speed Steel Screw-Machine Length Drill Bits
Parabolic-flute drill bits have wide, deep flutes that improve chip flow and heat dissipation, which means feed rates do not need to be reduced as the drill moves deeper into the workpiece. The bright finish on these drill bits is not affected when the bits' cutting edges are resharpened.
TiN-Coated Spiral-Flute High-Speed Steel Screw-Machine Length Drill Bits
The TiN coating on these drill bits protects them from wear and heat when drilling steel, stainless steel, and aluminum. The bits' spiral flutes evacuate chips as the bits drill into a workpiece.
Bright Finish Spiral-Flute High-Speed Steel Screw-Machine Length Drill Bits
These drill bits have a bright finish that is not affected when the bits' cutting edges are resharpened. Spiral-flute drill bits evacuate chips as the bits drill into a workpiece.
Left-Hand Bright Finish Spiral-Flute High-Speed Steel Screw-Machine Length Drill Bits
These bits have a left-hand drilling direction and can be used in reverse-drilling applications to remove broken screws from a hole. These drill bits have a bright finish that is not affected when the bits' cutting edges are resharpened. Spiral-flute drill bits evacuate chips as the bits drill into a workpiece.
AlCrN-Coated Parabolic-Flute High-Speed Steel Screw-Machine Length Drill Bits
The AlCrN coating on these drill bits protects them from wear during dry, high-speed machining applications. It is harder, resists cracking and oxidization better, and performs better in high-feed applications than a TiAlN coating. It also resists high heat better than an AlTiN coating. Parabolic-flute drill bits have wide, deep flutes that improve chip flow and heat dissipation, which means feed rates do not need to be reduced as the drill moves deeper into the workpiece.
NAS 907 Type C Bright Finish Spiral-Flute High-Speed Steel Screw-Machine Length Drill Bits
These screw-machine length drill bits meet National Aerospace Standards (NAS) 907 Type C for drill bits used in aircraft repair and production. They have a bright finish that is not affected when their cutting edges are resharpened. Spiral-flute drill bits evacuate chips as the bits drill into a workpiece.
TiAlN-Coated Fast-Spiral-Flute High-Speed Steel Screw-Machine Length Drill Bits
These drill bits have a TiAlN coating that withstands high temperatures and protects the bits from wear during high-speed, dry machining applications with difficult-to-machine ferrous metals. Fast-spiral drill bits evacuate chips more quickly than standard spiral-flute drill bits as the bits drill into a workpiece.