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Precision Twist R18 High Speed Steel Jobber Drill Bit, Black Oxide Finish, Round Shank, Spiral Flute, 118 Degree Point Angle

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Product Specifications
Cutting Direction
Right-Hand
Finish Types
Black Oxide
Shank Type
Round
Material Type
High-Speed Steel
Drill Point
Conventional
UNSPSC Code
20121600
Cutting Angle
118  Degrees
Brand Name
Precision Twist
Flute Type
Spiral

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Currently showing 1-20 of 31 Next 11 »
#7 R18 Wire Gauge 2-7/16" 3-5/8" 12 18007 B001VY33WG yes $24.96 Buy Options
#9 R18 Wire Gauge 2-7/16" 3-5/8" 12 18009 B0020960OY yes $24.97 Buy Options
#10 R18 Wire Gauge 2-7/16" 3-5/8" 12 18010 B0025QG4LQ yes $24.87 Buy Options
#13 R18 Wire Gauge 2-5/16" 3-1/2" 12 18013 B0025QI0PO yes $23.51 Buy Options
#15 R18 Wire Gauge 2-3/16" 3-3/8" 12 18015 B0026HGO32 yes $23.66 Buy Options
#16 R18 Wire Gauge 2-3/16" 3-3/8" 12 18016 B0025QC45Q yes $23.55 Buy Options
#17 R18 Wire Gauge 2-3/16" 3-3/8" 12 18017 B0025QC488 yes $23.52 Buy Options
#20 R18 Wire Gauge 2-1/8" 3-1/4" 12 18020 B002096134 yes $21.15 Buy Options
#21 R18 Wire Gauge 2-1/8" 3-1/4" 12 18021 B001VY33WQ yes $16.40 Buy Options
#22 R18 Wire Gauge 2" 3-1/8" 12 18022 B0025QC4EM yes $16.55 Buy Options
#25 R18 Wire Gauge 1-7/8" 3" 12 18025 B0020961ES yes $15.88 Buy Options
#26 R18 Wire Gauge 1-7/8" 3" 12 18026 B0025QC4II yes $16.02 Buy Options
#27 R18 Wire Gauge 1-7/8" 3" 12 18027 B0025QG55Q yes $15.94 Buy Options
#29 R18 Wire Gauge 1-3/4" 2-7/8" 12 18029 B002091XBO yes $17.44 Buy Options
#30 R18 Wire Gauge 1-5/8" 2-3/4" 12 18030 B001VY33XK yes $15.02 Buy Options
#31 R18 Wire Gauge 1-5/8" 2-3/4" 12 18031 B002091XLE yes $19.39 Buy Options
#35 R18 Wire Gauge 1-1/2" 2-5/8" 12 18035 B0020962F6 yes $15.63 Buy Options
#37 R18 Wire Gauge 1-7/16" 2-1/2" 12 18037 B002091YOK yes $14.81 Buy Options
#39 R18 Wire Gauge 1-3/8" 2-3/8" 12 18039 B0025QG5C4 yes $14.81 Buy Options
#41 R18 Wire Gauge 1-3/8" 2-3/8" 12 18041 B00209636O yes $15.05 Buy Options

Key Features

  • Jobber-length drill bits, most common length drill bit, suitable for a wide range of applications
  • 118-degree conventional point angles, for general drilling applications
  • Round shanks, for use on a variety of tool-holding systems
  • Steam tempering (black oxide) finish, retains cutting fluid and prevents chip to tool welding
  • High-speed steel (HSS), for use on a wide variety of materials

Product Description

The Precision Twist R18 jobber drill bit is a conventional point, general-purpose, round shank drill bit made of HSS with a steam tempering (also called black oxide) finish. It is suitable for drilling to a depth up to four times the diameter of the drill. Good for portable or machine drilling. The shank diameter is the same as the drill size. It was designed for drilling holes into a wide variety of metals and synthetic materials.

The R18 series has a type N flute form, with a regular helix (21- to 34-degree) angle have best performance drilling into steel or cast iron. The finish retains lubricants to aid in wear resistance and chip flow. 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.

Drilling, or hole making, is the most common metalworking operation in the world. Twist drill bits are the most common type of drill bit used. Twist drill bits are commonly used to drill holes with hand-operated drills, standalone drill presses, or lathes. The flutes of the drill bit act a passageway for chip extraction from the hole and for coolant to enter the hole. These drill bits have a right-hand twist that brings chips up and away from the cutting edge. They are made to ANSI (fractional sizing) industry standards, which ensure that drill bits around the world conform to the same specifications.

Precision manufactures machine tools under the following brands: Precision Twist, Precision Dormer, and Union Butterfield. They have locations around the world, and provide tools adhering to ANSI, NAS, and DIN standards.

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