Chicago-Latrobe
Chicago-Latrobe 40564 Extension Drill 3/32 x 12 in HSS Black Oxide
A 12-inch high-speed steel extension drill with a 135-degree split point and black oxide finish for deep-hole drilling
- TypeDrill Bits
- MaterialHAWA
- 3/32 inch diameter drills precise pilot holes
- 12 inch overall length reaches deep cavities
- High Speed Steel construction resists heat buildup
- 135 degree split point starts on contact
12-Inch Extension Drill for Deep Access
The Chicago-Latrobe 40564 extension drill reaches 12 inches to bore holes in deep or obstructed locations. Its 3/32-inch diameter suits precision fastening and pilot tasks. High-speed steel construction with black oxide finish resists wear during repetitive use. The 135-degree split point starts on contact and reduces walking on hard surfaces.
Low Heat and Stable Power Draw in Hand-Held Use
The black oxide coating lowers friction so the bit runs cooler during extended drilling cycles. Split-point geometry reduces the feed pressure needed, which keeps motor load steady on cordless or corded drivers. No coolant-through design means chips clear through the flutes without extra plumbing. The fractional 0.0938-inch size fits standard three-jaw chucks without adapters.
Highlights
- 3/32 inch diameter drills precise pilot holes
- 12 inch overall length reaches deep cavities
- High Speed Steel construction resists heat buildup
- 135 degree split point starts on contact
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
How do I install the 40564 extension drill in my drill chuck, and what step do people get wrong?
Insert the 12 in shank fully into the chuck and tighten securely; the step often missed is not seating the split point shank deep enough, which causes runout.
What maintenance or replacement will the 40564 HSS black oxide bit need later?
Resharpen the 135 degree split point when cutting slows; the black oxide coating wears off over time, so replace the bit once the high speed steel shows excessive wear.
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