HSS 5.50 mm Black & Gold Metal Twist Drill Bit – Pack of 10
Package quantity: 10. This product is sold only as one complete package. The price shown is for one complete package.
Black-and-gold metal drill bits made of 4341 HSS high-speed steel, coated with TiN (titanium nitride). Drill bits compliant with DIN 338. Cylindrical shank.
Drill bits intended for making through and blind holes. They have two central cutting edges ground at 135° and flutes that effectively evacuate chips upward from the hole.
TiN-coated drill bits are especially intended for machining difficult-to-cut materials. The TiN coating results in a increase in drill hardness, allows faster cutting and produces better finish on machined parts. The titanium nitride layer, by reducing friction, reduces cutting-edge wear, and thereby extends drill life.
Drill bits are packaged in a plastic container with a hole for hanging on a peg.
Product features:
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drill made of high-speed steel HHS 4341
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coated with TiN (titanium nitride)
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very good chip evacuation thanks to ground spiral
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2-step tip ground at 135°
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perfectly ground cutting edge
Technical specification:
Steel: HSS 4341
Coating: TiN
Size: 5.50 mm
Tip: 2-step, ground at 135°
Shank: cylindrical