Chicago-Latrobe
Chicago-Latrobe 52455 55/64 in HSS drill bit 118° point black oxide
A 55/64 in high-speed steel drill bit with a 118° point and black oxide finish for general-purpose drilling
- TypeDrill Bits
- MaterialHigh Speed Steel
- High-speed steel construction resists wear during heavy drilling
- 55/64 inch diameter suits large-hole applications
- 118-degree point angle starts cleanly on metal surfaces
- Black oxide finish reduces friction and corrosion
Chicago-Latrobe 52455 55/64 in HSS drill bit
This high-speed steel drill bit features a 55/64 inch diameter and a 118-degree point angle for general-purpose drilling. The black oxide finish adds corrosion resistance and reduces friction during operation. It is designed for machinists and maintenance professionals who need a reliable reduced-shank bit for metalworking tasks. The 52455 model fits standard chucks while providing the reach of a larger cutting diameter.
Replaces worn or undersized bits when a 55/64
Switch to this bit when a smaller drill cannot achieve the final diameter or when an old bit no longer cuts cleanly in steel. The HSS construction handles the heat of repeated use in ferrous materials better than carbon steel alternatives. The jump is worth it when hole accuracy and tool life matter more than the lowest upfront cost. It is not for buyers who need a split-point design for self-centering without a pilot hole.
Highlights
- High-speed steel construction resists wear during heavy drilling
- 55/64 inch diameter suits large-hole applications
- 118-degree point angle starts cleanly on metal surfaces
- Black oxide finish reduces friction and corrosion
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | High Speed Steel |
Questions about this item
What chuck size is required for the 55/64 in reduced shank?
The reduced shank fits a standard 1/2 in drill chuck, allowing the larger 55/64 in cutting diameter to be used on common power drills.
How should the 118° point be started to avoid wandering?
Use a centre punch mark and begin drilling at low speed with steady pressure; the 118° point centres quickly but can skip if started on a smooth surface without a dimple.
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