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Westward jobber drill bit 3/8 inch cobalt steel straw bronze finish

Westward

Westward Jobber Drill Bit 3/8" Cobalt Steel Straw/Bronze

SKU CH-AXAZ-F47PY

A 3/8 inch cobalt steel drill bit with a 143 degree split point for accurate starts

  • Product typeDrill Bits
  • Split-point tip reduces walking for accurate hole starts
  • Cobalt steel construction resists heat during high-speed drilling
  • 143-degree point angle suits hard metal applications
  • 3/8-inch diameter with .3750 decimal equivalent fits standard chucks
  • Straw/bronze finish identifies cobalt alloy and adds corrosion resistance

3/8 Inch Cobalt Jobber Drill Bit

The Westward jobber drill bit is made from cobalt steel with a straw bronze finish for hard metal drilling. Its split point design starts on contact and reduces walking on tough alloys. The 143 degree point angle suits stainless steel and other high tensile materials. Right hand cutting direction matches standard drill chucks.

Suited For Metalworkers Needing Hard Material

Machinists and fabricators drilling stainless steel, tool steel or titanium will benefit from the cobalt substrate and split point geometry. Builders who only drill wood, plastic or soft aluminium will not need the added heat resistance and can choose a less specialised bit. The fixed 3/8 inch diameter also limits use to a single hole size.

Fits Standard 3/8 Inch Chucks For Bench

The straight shank matches the drill bit diameter so it locks directly into any 3/8 inch capacity chuck without a reduced shank adapter. Five inch overall length and three and five eighths inch flute length reach through thick plate while leaving clearance for the chuck. No through coolant channel means external lubrication is required for deep holes.

How it compares

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

Price $9.99
Cheaper than about 88% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameWestward
Product typeDrill Bits

Questions about this item

What chuck size do I need to fit the 3/8 inch shank on this bit?

The shank diameter is 3/8 inch, so a chuck that opens to at least .3750 will hold it securely.

Will the 143 degree split point start cleanly in the same steel my older high-speed bits struggle with?

The cobalt steel and 143 degree split point are designed to cut harder alloys without walking, reducing the pressure needed compared to standard bits.

How can I confirm the bit is cutting correctly once I begin drilling?

A clean, continuous chip and steady feed without excessive heat or chatter show the split point and cobalt material are performing as intended.

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