Chicago-Latrobe
Chicago-Latrobe Extra Long Drill Bit #15 HSS 11139
An extra-long high-speed steel drill bit sized #15 with a 135-degree split point and black-oxide finish for deep-hole drilling up to 2 3/16 inches
- TypeDrill Accessories
- MaterialHAWA
- Extra reach with 4xD length for deep holes
- #15 wire-gauge bit drills precise small diameters
- 135° split point starts fast without walking
- High-speed steel with black oxide resists wear
Extra Long Drill Bit #15 HSS
The Chicago-Latrobe Extra Long Drill Bit #15 is manufactured from high speed steel with a black oxide finish. It features a 135 degree split point for accurate starting. The 28 degree helix suits high performance machining. Maximum drilling depth reaches 2 3/16 in.
Wire Size 4xD Application
This bit targets wire gauge holes at a 4xD depth ratio. The extra long flute clears chips from deeper holes. It is not for standard length drilling jobs. Buyers needing shorter bits or different diameters should select another size.
Highlights
- Extra reach with 4xD length for deep holes
- #15 wire-gauge bit drills precise small diameters
- 135° split point starts fast without walking
- High-speed steel with black oxide resists wear
Specifications
| Brand | Chicago-Latrobe |
|---|---|
| Type | Drill Accessories |
| Material | HAWA |
Questions about this item
When will the #15 HSS bit need replacement?
Replace the bit when the split point dulls or the black oxide coating wears away, reducing cutting efficiency in wire-gauge holes.
What limits continuous drilling with this 135-degree split-point bit?
Chip evacuation in the 2 3/16 in flute length becomes the limiting factor during sustained high-speed steel drilling.
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