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Silver and Deming drill bit, 1-1/8 inch HSS, reduced 1/2 inch shank, surface-treated flutes

Drill America

Drill America 1-1/8in HSS 1/2in Reduced Shank Silver and Deming Drill Bit pneumatic accessory

SKU CH-MFYY-ZKCYQ

A 1.1250 inch HSS Silver and Deming drill bit with a 1/2 inch reduced shank and surface-treated flutes for drilling large holes in metal

  • Product typeDrill Accessories
  • 1-1/8 inch hole capacity from 1.1250 decimal size
  • High-speed steel construction resists wear in tough materials
  • Reduced 1/2 inch shank fits standard drill chucks
  • Silver and Deming design enables deep drilling up to 3 inch flute length

1-1/8 in Silver and Deming bit

This Drill America Silver and Deming drill bit is built for large-diameter holes in metal. The high-speed steel body with surface-treated flutes resists wear during repetitive drilling. A 1/2 in reduced shank allows the bit to fit standard drill chucks that cannot accept a full-size shank. It suits maintenance, fabrication and automotive shops that need a single large bit rather than a full set.

HSS construction and reduced-shank fit

High-speed steel handles the heat generated when boring 1.1250 in diameter holes without rapid edge breakdown. Surface-treated flutes improve chip evacuation and reduce friction during the cut. The 3 in flute length and 6 in overall length give sufficient reach for typical workpiece thicknesses. The reduced shank keeps the bit compatible with common 1/2 in chucks so no specialised holder is required.

How it compares

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

Price $36.99
Pricier than about 59% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

How do I install the 1-1/8in HSS drill bit with its 1/2in reduced shank, and what step do people often get wrong?

Insert the 1/2in reduced shank fully into the drill chuck and tighten securely; the step users miss is not seating the shank completely, which causes wobble at the 1.1250in cutting diameter.

What maintenance or replacement will this Silver and Deming drill bit need over time?

The HSS cutting edges will dull with use; resharpen the flutes when drilling becomes slow or the bit overheats, and replace the bit once the 1.1250in diameter can no longer be restored by sharpening.

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