Half Round H.S.S. Jobbers Length Twist Drill & Sets
1/16-1/2 A51S HALF-RD;DR.ST

Half Round H.S.S. Jobbers Length Twist Drill & Sets

Item #: 01-051-901
Size: 1/16" to 1/2" by 64ths
Size Type: Fractional
Finish Coating: Bright Finish

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Excellent for drilling brass, copper, hard rubber, fiber and other soft materials


  • For drilling operations in soft materials that can frequently clog the standard helical flutes with chips.
  • For use on soft non-ferrous metals such as brass, copper, and soft aluminum. Non-metallic materials, such as rubber, fiber, and paper may also be machined with these drills.
  • May be used with hand held manual drills and either portable or stationary machines.


  • Greater chip clearance for deep drilling.
  • Finer finish at higher cutting speeds.
  • Greater accuracy by minimizing off center problems and drill run-off in deep holes.
TTC PROD A51-S 1/16-1/2" By 64ths 29 Piece HSS Ground Bright Fractional Half Round Jobbers Drill Set
Product Specifications
Size 1/16" to 1/2" by 64ths
Size Type Fractional
Finish Coating Bright Finish
Drill Point Angle 118°
Tool Material High Speed Steel
Cutting Direction Right Hand
Length Style Jobbers Length
Prop. 65 Yes
Type Half Round H.S.S. Jobbers Length Twist Drills & Sets
Model # A51-S
Weight 3.4351 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.