Chicago-Latrobe
Chicago-Latrobe Extra Long Drill 7/16" HSS 11120 135° Split Point Black Oxide
Extra-long HSS drill bit with 135° split point and black oxide finish drills deep holes up to 4 1/16 in. in a single pass
- TypeDrill Accessories
- Extra reach for deep holes with 4 1/16 in drilling depth
- Clean starts on tough steel with 135° split point tip
- HSS body resists wear in high-performance machining
- Black oxide finish cuts friction at 28° helix angle
Extra-long 7/16" HSS drill bit
The Chicago-Latrobe 11120 is a high-speed steel drill bit with a 135-degree split point and black oxide finish. It is designed for deep-hole drilling where standard-length bits cannot reach. The fractional 7/16-inch diameter suits metalworking tasks that require precise pilot holes. Machinists and maintenance technicians will find it useful for extended-reach applications.
Sustained drilling in tough alloys
The 28-degree helix angle promotes steady chip evacuation during prolonged cuts, reducing heat buildup in the cutting zone. High-speed steel construction maintains edge integrity when drilling to the maximum 4 1/16-inch depth in a single pass. The split-point geometry keeps the bit centred without a separate centre punch, saving setup time on repetitive jobs. Black oxide coating adds lubricity and corrosion resistance for longer service life.
Highlights
- Extra reach for deep holes with 4 1/16 in drilling depth
- Clean starts on tough steel with 135° split point tip
- HSS body resists wear in high-performance machining
- Black oxide finish cuts friction at 28° helix angle
Specifications
| Brand | Chicago-Latrobe |
|---|---|
| Type | Drill Accessories |
Questions about this item
How much heat does the 135° split-point bit generate during extended drilling?
The 135° split-point geometry reduces thrust force, which lowers friction and heat build-up during long drilling sessions.
What shank size must my drill chuck accept to hold the 7/16" bit?
The bit has a 7/16 inch shank, so your drill chuck must open to at least that diameter.
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