Chicago-Latrobe
Chicago-Latrobe 55441 118 Degree Silver & Deming Drill 41/64 in
Drills 41/64 in holes with a 118-degree point and 1/2 in reduced shank
- TypeDrill Bits
- 118-degree point starts holes cleanly without wandering
- 41/64 inch diameter bores large openings in one pass
- 1/2 reduced shank fits standard drill chucks securely
- High-speed steel construction resists heat during heavy cutting
- Black oxide finish reduces friction and adds wear resistance
Chicago-Latrobe 55441 41/64 Drill Bit
The Chicago-Latrobe 55441 is a Silver & Deming drill bit with a 41/64 inch diameter and a 118 degree point angle. It is made from high speed steel with a black oxide finish for durability in general-purpose metal drilling. The reduced 1/2 inch shank allows it to fit standard drill chucks. This bit suits maintenance and fabrication tasks requiring a specific large-hole size.
Installation And Common Issues
The reduced shank inserts directly into a 1/2 inch chuck without a special adapter. Tighten the chuck securely to prevent the bit from spinning under load. A common issue is excessive heat buildup when drilling thick steel without cutting fluid. Using lubrication and moderate speed reduces wear and prevents the cutting edges from dulling prematurely.
Capacity And Headroom
This bit comfortably handles drilling 41/64 inch holes in mild steel, cast iron, and non-ferrous metals. The high speed steel construction provides adequate wear resistance for repetitive shop use. It runs out of effective cutting life in hardened alloys or abrasive materials where cobalt or carbide tooling is required. The 118 degree point is not suited for precision starting on curved surfaces without a centre punch.
Highlights
- 118-degree point starts holes cleanly without wandering
- 41/64 inch diameter bores large openings in one pass
- 1/2 reduced shank fits standard drill chucks securely
- High-speed steel construction resists heat during heavy cutting
- Black oxide finish reduces friction and adds wear resistance
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
How can I verify the 118-degree point angle is cutting correctly on the 41/64 in drill bit?
The bit should produce clean, centred holes with minimal wandering and consistent chip formation in steel when run at the proper speed for high-speed steel.
What comes with the Chicago-Latrobe 55441 and what must I supply?
The package contains the single 41/64 in Silver & Deming drill bit with a 1/2 in reduced shank; you must provide a compatible drill motor or press.
Which capacity should I choose for the Chicago-Latrobe 55441 Silver & Deming drill?
This model is offered only in the 41/64 in size with a 118-degree point and black oxide finish, so select it when that exact diameter is required.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
