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Silver 57/64 inch HSS drill bit with reduced shank and three flats

Drill America

Drill America 57/64in HSS 1/2 Reduced Shank Silver and Deming Drill Bit with 3-Flatted Shanks

SKU CH-W3CG-0GHD9

A 57/64 inch high-speed steel Silver and Deming drill bit with a reduced 1/2 inch shank featuring three flats for secure chuck grip

  • Product typeDrill Accessories
  • 57/64 inch HSS drill bit handles large holes
  • Reduced 1/2 inch shank fits standard chucks
  • Three-flatted shank prevents slipping during use
  • Silver and Deming design with surface-treated flutes

57/64 Inch HSS Silver and Deming Drill Bit

This Drill America bit is a high-speed steel Silver and Deming drill designed for heavy-duty drilling tasks. It features a 1/2 inch reduced shank with three flats to prevent slipping in the chuck. The surface-treated flutes enhance chip evacuation and reduce friction during operation. It suits professional mechanics and fabricators who need to enlarge existing holes in metal.

Upgrading from standard twist drills for large holes

Standard twist drills typically max out at 1/2 inch shank capacity, limiting hole size. This bit bridges the gap, allowing 57/64 inch holes using a standard 1/2 inch drill chuck. The jump is worth it when a project requires a precise .8906 decimal equivalent diameter in steel or iron. It is not for buyers needing smaller pilot holes or those using impact drivers without a keyed chuck.

How it compares

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

Price $20.99
Cheaper than about 62% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

What chuck size does the 1/2 reduced shank require?

The 1/2 inch reduced shank fits any drill chuck that accepts a 1/2 inch shank, allowing use with standard 1/2 inch capacity drills.

How do the 3-flatted shanks prevent the bit from spinning in the chuck?

Tighten each flat securely against the chuck jaws so the flats seat fully; the most common error is tightening on the round portion between flats.

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