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Rectangular cobalt tool blank, half-inch square, four inches long, fifteen-degree bevel

Westward

Westward 4WZX1 Lathe Tool Blank Cobalt 1/2 in 4 in 15° Bevel

SKU CH-5SD6-AJVTK

Cobalt lathe tool blank with a 15° bevel for right- and left-hand turning

  • Product typeHole, Drill, Bore & Wire Gauges
  • Cobalt alloy resists wear for longer tool life
  • 15° bevel angle supports precise left and right-hand turning
  • 4 in length fits standard lathe tool holders
  • 1/2 in square shank provides secure clamping rigidity
  • High-speed steel with 5% cobalt handles high-heat machining

Lathe tool blank with 15° bevel

This cobalt lathe tool blank measures 4 in overall length with a 1/2 in square cross-section. The 15° bevel angle suits right-hand and left-hand turning operations. It is sold as a single blank for custom grinding.

Verify lathe toolpost clearance

Check that your toolpost or quick-change holder accepts a 1/2 in square shank before ordering. Ensure the 4 in length fits within your lathe's swing and carriage travel limits. The 15° bevel requires adequate tool-rest positioning for both cutting directions.

Replaces worn HSS blanks

This blank upgrades from standard high-speed steel when longer edge life in abrasive materials is needed. The cobalt content improves hot hardness for sustained cuts. The improvement is worthwhile when tool-change frequency slows production.

How it compares

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

Price $17.99
Cheaper than about 62% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameWestward
Product typeHole, Drill, Bore & Wire Gauges

Questions about this item

Does the 1/2 in by 4 in cobalt lathe tool blank arrive ready to mount or are additional holders required?

The blank is supplied as a single beveled cobalt bar measuring 1/2 in wide, 1/2 in high and 4 in long with a 15 degree bevel for right or left hand use; no holder, clamp or extra hardware is included.

When would a machinist choose this 15 degree bevel blank over other angles?

A 15 degree bevel suits general purpose turning on a variety of materials and works for both right and left hand operations, making it a versatile starting point before grinding a custom profile.

How does the 5 percent cobalt content affect tool life when the blank is ground and used in a lathe?

The 5 percent cobalt raises hot hardness and wear resistance compared with standard high speed steel, so the finished tool holds a sharp edge longer during extended cuts.

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