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HSS-E Stub Drill, Bronze, Short, 3.7mm

  • Zoro #: G0095772
  • Mfr #: 4ASMCO3.7

$6.32 /ea

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  • Item: HSS-E Stub Drill,Bronze,Short,3.7mm
  • Country of Origin (subject to change): Brazil
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Precision Twist Drill #4ASMCO3.7 Specifications

  • Zoro #: G0095772
  • Mfr #: 4ASMCO3.7
Item: HSS-E Stub Drill,Bronze,Short,3.7mm Country of Origin (subject to change): Brazil
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The Precision Twist 4ASMCO stub-length drill bit is a heavy duty, 135-degree, spilt-point, round shank drill bit made of high-speed steel and cobalt with a gold oxide finish. They meet NAS 907 aircraft industry specifications for heat resistance and use for drilling hard, tough materials. This is best used drilling into hardened, tempered alloy steel, nodular graphite, malleable cast iron, titanium, nickel, and other hard materials such as cemets (metals-ceramics). It is suitable for drilling to a depth up to two-and-one-half times the diameter of the drill. The shank diameter is the same as the drill size. Made with cobalt which is many times harder/stiffer than HSS, will hold an edge longer, and will deflect less than HSS. These are also more resistant to heat than HSS. These qualities allow it to run at higher speeds and feeds. They are made to DIN 1897 (metric sizing) industry standards, which ensure that drill bits around the world, confirm to the same specifications. The 4ASMO series has a type N flute form, with a regular helix angle (21 to 34 degrees). The gold oxide is a low temperature heat treatment which reduces grinding stress within the tool, and has an appealing, easy-to-identify gold color. Gold oxide is commonly used to identify cobalt steel tools. Spiral flutes act as a passageway for chip extraction from the hole and for coolant to enter the hole. Right-hand twist brings chips up and away from the cutting edge.


Restrictions and Compliance

WARNING : Cancer and Reproductive Harm -

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