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Silver metal twist drill bit with black oxide finish, cylindrical shank and pointed tip

Westward

Westward 15/64" HSS Black Oxide 118 Deg Jobber Drill Bit

SKU CH-5H0G-0RS90

Drills 15/64 inch holes using high-speed steel with black oxide finish and 118-degree point angle

  • 15/64 inch size suits precise fractional drilling
  • High-speed steel construction resists wear in tough materials
  • Black oxide finish reduces friction and chip welding
  • 118-degree conventional point starts cleanly without walking
  • Jobber length provides standard reach for general use

15/64" Jobber Drill Bit

This 15/64 inch jobber drill bit is made from high speed steel with a black oxide finish. It suits general purpose drilling in metal, wood and plastic for trade professionals and DIY users. The conventional 118 degree point allows reliable starting on flat surfaces without a pilot hole. Fractional sizing matches common imperial specifications.

Black Oxide High Speed Steel Construction

Black oxide coating reduces chip welding and improves lubricity during cutting. High speed steel body resists wear when drilling mild steel, aluminium and alloys. The jobber length provides standard reach for through holes and deep drilling tasks. No coolant through design means external lubrication is required for tougher materials.

Heat Resistance And Cutting Performance

High speed steel retains hardness at elevated temperatures generated during extended drilling. The 118 degree point angle distributes cutting forces evenly to limit chatter. Black oxide surface helps dissipate heat away from the cutting edges. Conventional point geometry produces manageable chip loads for hand held or machine use.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $2.99
Cheaper than about 96% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameWestward

Questions about this item

What does the 118 degree point angle mean for drilling performance?

The 118 degree conventional point is a general-purpose geometry suitable for drilling mild steel, aluminium and plastic in portable or stationary drills.

What chuck capacity is required for the 15/64 inch shank?

The bit has a 0.2344 inch diameter shank, so a 1/4 inch or larger three-jaw chuck is needed to grip it securely.

How should the black oxide finish be treated before first use?

Wipe off any preservative oil, then apply cutting fluid or light oil during drilling to reduce friction and extend the high-speed steel edge life.

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