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Westward 5TVK5 12 inch HSS aircraft drill bit black oxide finish

Westward

Westward 5TVK5 Aircraft Drill 1/8 in 12 in HSS Black Oxide

SKU CH-4YAF-A6142 MPN 5TVK5

1/8-inch high-speed steel drill bit with 135-degree split point and black oxide finish for aircraft maintenance

  • Product typeDrill Accessories
  • Main materialHigh speed steel
  • 12 inch length reaches deep work areas
  • 135 degree split point starts holes without walking
  • High speed steel resists heat during extended drilling
  • Black oxide finish reduces friction and chip welding
  • 1/8 inch fractional size matches standard fastener clearance

Jobber-Length Drill Bit

Westward 5TVK5 is a 12-inch aircraft drill bit made from high-speed steel with a black oxide finish. It features a 1/8-inch diameter and a 135-degree split point for accurate starting in metal. The jobber length provides extended reach for deep-hole drilling tasks.

Suits Deep-Hole Metal Drilling

This bit suits machinists and maintenance technicians drilling deep holes in steel or alloy where a standard-length bit cannot reach. The split point reduces walking on hard surfaces. It does not suit users who need a coolant-through design for high-volume production or bits for wood, masonry, or large-diameter holes.

12-Inch Overall Length

The 12-inch overall length is the critical specification that determines if this bit reaches the required depth. The 1/8-inch diameter and .1250 decimal equivalent define the hole size. The 135-degree point angle and high-speed steel material suit general-purpose metal cutting.

How it compares

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

Price $3.99
Cheaper than about 96% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameWestward
Model name5TVK5
Product typeDrill Accessories
Size & build
Main materialHigh speed steel

Questions about this item

What drill-bit point angle does the 1/8 in bit use?

The bit has a 135-degree split point that reduces walking and starts holes cleanly.

What shank size fits a standard drill chuck for this 12 in bit?

The 1/8 in shank matches common three-jaw chucks up to 3/8 in capacity.

How do you install the bit so the split point engages properly?

Insert the shank fully, tighten the chuck evenly on all three jaws, and avoid over-tightening which can mask the split-point benefit.

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