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Silver and Deming drill bit 55/64 inch reduced shank HSS

Drill America

Drill America 55/64" HSS Silver & Deming Drill Bit 1/2" Reduced Shank

SKU CH-D96X-B0068

A 55/64-inch high-speed steel Silver and Deming drill bit with a 1/2-inch reduced shank for use in standard drill chucks

  • Product typeDrill Accessories
  • HSS steel resists heat during heavy drilling
  • 1/2" reduced shank fits standard drill chucks
  • Silver & Deming design handles large 55/64" holes
  • Surface-treated flutes improve chip removal efficiency

55/64" HSS drill bit with reduced shank

This high-speed steel drill bit measures 55/64 inch with a decimal equivalent of .8594. It features a 1/2 inch reduced shank that fits standard Silver and Deming drill chucks. The flute length is 3 inches and the overall length is 6 inches, making it suitable for deep-hole drilling in metal and wood. Surface-treated flutes improve chip evacuation and reduce friction during extended use.

Reduced shank fits 1/2" chucks without adapters

The 1/2 inch shank allows direct insertion into drill presses and large hand drills that accept Silver and Deming bits. Users with 3/8 inch chucks will need a separate adapter to run this bit. The straight shank design provides secure grip in keyed or keyless chucks. Surface treatment on the flutes helps maintain cutting performance when drilling steel, cast iron or hardwood.

How it compares

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

Price $18.99
Cheaper than about 66% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

When will the 55/64" HSS drill bit need resharpening or replacement?

The high-speed steel cutting edges dull with use; resharpen when drilling pressure rises or hole quality drops, and replace once the flute length of 3" is worn back.

What limits continuous drilling with the 1/2" reduced shank?

Heat buildup in the HSS body and torque on the 1/2" shank are the first limits; clear chips often and use cutting fluid to delay both.

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