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#40 HSS 135 Deg. Jobber Length Drill Bit

  • Zoro #: G0115250
  • Mfr #: R18BN40

$1.16 /ea

Order in multiples of 12

  • Coolant Through: No
  • Drill Bit Point Angle: 135 Degrees
  • Drill Bit Material: High Speed Steel
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Precision Twist Drill #R18BN40 Specifications

  • Zoro #: G0115250
  • Mfr #: R18BN40
Coolant Through: No Drill Bit Point Angle: 135 Degrees
Drill Bit Material: High Speed Steel Shank Dia.: 0.0980"
Material: High Speed Steel Drill Bit Size: #40
Point Type: Self Centering Split Point Cutting Direction: Right Hand
Drill Bit Dimension Type: Wire Item: HSS Jobber Drill,Steam Oxide,N40
Drill Bit Grouping: Drill Bit Drill Bit Finish: Steam Oxide
Country of Origin (subject to change): France
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The Precision Twist R18B jobber-length drill bit is a round shank bit made of HSS with a steam tempering finish. It is suitable for drilling to a depth up to four times the diameter of the drill. The shank diameter is the same as the drill size. For best performance, use for drilling into alloyed, hardened and tempered steel, nodular graphite malleable cast iron, titanium, and alloyed nickel. While the R18B series was designed for the aircraft industry, it also works well for drilling into a variety of materials. The jobber length and 118-degree split-point drill geometry provide good reach to the work piece and ensure a more accurate hole by reducing walking when the hole is started. Steam tempering finish gives a strongly adhering blue oxide surface that acts to retain cutting fluid and prevent chip to tool welding, reducing the formation of a built-up edge. The finish retains lubricant to aid in wear resistance and chip flow. The R18B series has a type N flute form, with a regular helix (21- to 34-degree) angle. Uncoated tools have no finish or coating. They are a common choice for general use applications. The short-stub length has more rigidity for drilling straighter, shallower holes than jobber-length bits. 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. and away from the cutting edge. They are made to ANSI (fractional sizing) and NAS 907 type B industry standards, which ensure that drill bits around the world conform to the same specifications.


Restrictions and Compliance

WARNING : Cancer and Reproductive Harm -

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