Chicago-Latrobe
Chicago-Latrobe 48549 49/64" HSS 118° Jobber Drill Bit
High-speed steel jobber drill bit with a 118° conventional point for 49/64" holes
- 49/64 inch diameter drills precise large holes
- 118 degree point angle starts cleanly in metal
- High speed steel construction resists heat buildup
- Black oxide finish reduces friction and wear
- Right hand cutting direction matches standard chucks
Chicago-Latrobe 49/64" Jobber Drill Bit
The Chicago-Latrobe 48549 is a high-speed steel jobber length drill bit sized at 49/64 inch with a 118-degree conventional point. It features a black oxide finish and right-hand cutting direction for general-purpose drilling applications. The decimal equivalent measures .7656 inches for precise hole sizing.
Suited for general machine shop drilling
This bit serves machinists and maintenance technicians creating standard holes in ferrous and non-ferrous materials using conventional drilling equipment. The 118-degree point angle handles typical shop materials without specialised requirements. Buyers needing coolant-through capability or coated performance for high-volume production should evaluate alternative tooling options.
49/64 inch diameter with standard jobber length
The .7656 inch diameter accommodates common fractional hole requirements in maintenance and repair operations. High-speed steel construction provides adequate wear resistance for intermittent drilling tasks in mild steel, aluminium and cast iron. The non-coolant design limits sustained high-speed drilling in deep holes or difficult alloys where heat buildup accelerates wear.
Highlights
- 49/64 inch diameter drills precise large holes
- 118 degree point angle starts cleanly in metal
- High speed steel construction resists heat buildup
- Black oxide finish reduces friction and wear
- Right hand cutting direction matches standard chucks
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
What chuck size do I need to hold the 49/64" shank on this jobber bit?
A three-jaw chuck that opens to at least 0.7656" will grip the straight shank securely.
Will the 118° conventional point cut cleanly in the mild steel I usually drill with older cobalt bits?
Yes, the 118° point is designed for general-purpose drilling in mild steel and similar materials.
How can I confirm the bit is running true after I clamp it in the drill press?
Rotate the chuck by hand and watch the tip; it should trace a single circle with no visible wobble.
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