Cobalt Silver & Deming Drills
TTC PRODUCTION Cobalt Silver & Deming Drills - Drill Point Angle: 118°   Tool Material: Cobalt Steel   Flute Shape: Helical Flute   Series: A15-C0   Shank Size : 1/2   Size : 37/64

Cobalt Silver & Deming Drills

Item #: 01-080-137
Size: 37/64"
Decimal Diameter: .5781"
Tool Material: Cobalt

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Can be used in electric drills and drill presses with 1/2" capacity drill chuck


  • Cobalt offers better wear resistance, higher hot hardness & toughness when compared to high speed steel.
  • Cobalt also provides less chipping under severe cutting conditions allows tool to be run 10% faster than high speed steel.
  • Primarily designed as tools for heavy duty drilling of larger holes requiring reduced diameter straight shank drills.
  • Suitable for most drilling operations in a wide array of materials having low and medium tensile strength ratings.
  • Intended for those applications where only a 1/2" chuck is available to drive the drills.
  • May be used with a wide range of portable or stationary machine tools and with hand held manual drills.
  • For optimal performance and the best tool life suitable lubricating/cutting oils or the appropriate coolant fluids are recommended.


  • Right hand (clockwise rotation) cutting direction.
  • Standard two flute design.
  • Standard spiral, helical flutes.
  • All drills have reduced shanks that are 1/2" in diameter.
  • Available in individual size drills or in sets.
  • Some TTC Production sizes may be supplied in 135° drill point.
TTC Production 8 Piece Set
  • 118° point angle and standard web thickness.
  • Metal index.
Precision Twist Drill 8 Piece Set
  • 118° split point.
  • Plastic case.

Technical Data

  • Manufactured from cobalt steel.
  • Surface treated.
  • Black and bright finishes.
TTC Production
  • 118° point angle and standard web thickness.
Precision Twist Drill
  • 118° split point and are self-centering.


  • Special care should be exercised to avoid bending or shearing the reduced diameter drill shank.
TTC 37/64" x 1/2" Shank Cobalt Silver & Deming Drill
Product Specifications
Size 37/64"
Decimal Diameter .5781"
Tool Material Cobalt
Finish Coating Black Oxide With Polished Flutes
Flute Length 3-1/8"
Overall Length 6"
Decimal Size .5781"
Diameter .5781"
Drill Point Angle 118°
Flute Shape Helical
No. of Flutes 2
Point Sharpening Type Standard Point
Series A15-C0
Prop. 65 Yes
Shank Style Reduced Shank
Type Cobalt Silver & Deming Drills
Size_Combination 37/64
Weight 0.188 lbs.
Country of Origin Import
Prop 65 Warning Many metalworking products do contain metals that are included in the latest Prop 65 warning. Exposure to the elements can be harmful. May cause cancer and reproductive harm.