Drill America
Drill America 55/64" HSS Silver & Deming Drill Bit 1/2" Reduced Shank
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
- 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.
Highlights
- 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
Specifications
| Brand | Drill America |
|---|---|
| Type | Drill 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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