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3/8 inch HSS mechanics drill bit with black and gold finish, 135 degree point

Westward

Westward 3/8 in 135° HSS Mechanics Drill Bit

SKU CH-36DT-3M5DM

High-speed steel mechanics drill bit with 135-degree point and black-gold finish for fractional-inch machining

  • High-speed steel withstands heat during drilling
  • 135-degree split point starts holes without wandering
  • 3/8-inch fractional size fits common chucks
  • Black-and-gold finish resists corrosion in storage
  • Mechanics-length flute clears chips efficiently

Application Scope

This Westward 3/8 in 135° HSS mechanics drill bit is designed for general-purpose drilling in metal, wood and plastic. It suits maintenance technicians, automotive specialists and workshop users who need a fractional-inch bit with a 135-degree split point for accurate starting. Buyers requiring metric sizes or specialised coating options will need a different product.

Heat and Wear

High-speed steel construction provides standard heat resistance during normal drilling operations. The black and gold finish helps reduce friction and resist corrosion under typical workshop conditions. No specific thermal ratings or noise data are supplied for this accessory.

Sustained Use

The 135-degree point geometry maintains centring and chip clearance during extended drilling cycles. High-speed steel retains hardness at working temperatures encountered in repetitive tasks. Users performing continuous high-volume production drilling may prefer cobalt or carbide alternatives not covered by this item.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 95% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

How do I install the 3/8 inch 135° HSS bit in a drill chuck, and what step do people often get wrong?

Open the chuck fully, insert the bit shank straight until it seats, then tighten securely. The common error is not centering the shank, which causes run-out and premature wear.

What maintenance or replacement will the 135° split-point bit need later?

The high-speed steel cutting edges dull with use. Resharpen the 135° angle on a bench grinder or replace the bit when drilling force increases noticeably.

What limit appears first on the black-and-gold finish bit during sustained drilling?

Heat buildup at the 0.3750 inch diameter softens the HSS, causing rapid edge wear. Use cutting fluid and reduce speed to delay this limit.

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