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Chicago-Latrobe 53436 drill bit, straw bronze finish, reduced shank

Chicago-Latrobe

Chicago-Latrobe 53436 118 Degree Silver & Deming Drill 1/2 Reduced Shank

SKU CH-BWSR-G4R6C

A 118-degree cobalt drill bit with a 1/2 reduced shank for large-hole drilling

  • Product typeDrill Bits
  • Main materialHAWA
  • Cobalt construction withstands high heat for longer life
  • 118-degree point angle starts accurately on contact
  • Reduced 1/2 shank fits standard drill chucks
  • 9/16 inch diameter bores large holes efficiently
  • Straw bronze finish resists corrosion during storage

9/16-Inch Reduced Shank Drill Bit

The Chicago-Latrobe 53436 is a Silver & Deming drill bit designed for drilling 9/16-inch holes with a 1/2-inch reduced shank. It suits machinists and maintenance technicians who need to create large-diameter holes using a standard drill chuck. The 118-degree point angle provides a conventional cutting profile for general-purpose drilling tasks in metal.

Machining Cobalt Construction Under Load

The bit is manufactured from machining cobalt material, which maintains hardness at elevated temperatures generated during sustained drilling. This composition resists wear and edge degradation better than standard high-speed steel when working through tough alloys. The straw-bronze finish indicates a surface treatment that aids chip evacuation and reduces friction during prolonged cuts.

Upgrade From Standard High-Speed Steel Bits

This cobalt bit replaces general-purpose high-speed steel Silver & Deming drills when tool life and heat resistance become limiting factors. The jump is worth it for shops drilling frequent holes in stainless steel, cast iron, or other abrasive materials where standard bits dull quickly. It is not for buyers who need a full 9/16-inch shank for rigid toolholding or those requiring specialised point geometries for specific alloys.

How it compares

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

Price $34.99
Pricier than about 57% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits
Size & build
Main materialHAWA

Questions about this item

Does the 118-degree point on the 53436 bit generate less heat during extended drilling?

The 118-degree point angle is designed for general-purpose drilling and helps centre the bit quickly, reducing wandering and friction that can increase heat buildup.

What chuck size is required to hold the 1/2 reduced shank on this drill bit?

A drill chuck with at least 1/2-inch capacity is needed to secure the reduced shank of this 9/16-inch bit.

Will the 118-degree cobalt bit cut effectively through older, hardened steel workpieces?

The cobalt construction and 118-degree point provide hardness and heat resistance suitable for drilling tough materials including hardened steel.

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