Chicago-Latrobe
Chicago-Latrobe 44916 135 Degree Cobalt Jobber Drill Bit
A 1/4-inch cobalt jobber drill bit with a 135-degree split point for heavy-duty drilling
- TypeDrill Bits
- MaterialHAWA
- 135-degree split point starts cleanly on hard steel
- Cobalt HSS body resists heat during deep cuts
- TiAlN coating adds wear life in tough alloys
- Jobber length gives reach for standard holes
- 1/4-inch fractional size fits common chucks
Cobalt Jobber Drill Bit
The Chicago-Latrobe 44916 is a 135-degree split-point drill bit made from cobalt steel with a TiAlN coating. It is designed for heavy-duty drilling in hard metals such as stainless steel and high-strength alloys. The jobber length suits general-purpose workshop and maintenance tasks.
Check Chuck Capacity
Verify that your drill chuck accepts a 1/4-inch shank before ordering. The bit has a decimal equivalent of .2500 and a fractional inch size with zero coolant holes. Confirm the material you intend to drill matches the bit's cobalt construction and split-point geometry for proper engagement.
Sustained Cutting Behaviour
Under continuous load the cobalt substrate and TiAlN coating resist heat buildup better than standard high-speed steel. The 135-degree split point reduces walking and maintains centering during extended drilling cycles. The non-coolant-through design means chips must be cleared manually in deep holes.
Highlights
- 135-degree split point starts cleanly on hard steel
- Cobalt HSS body resists heat during deep cuts
- TiAlN coating adds wear life in tough alloys
- Jobber length gives reach for standard holes
- 1/4-inch fractional size fits common chucks
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
Does the 44916 cobalt jobber bit come alone or in a set, and is a holder included?
The listing describes a single 135-degree split-point drill bit; no case, index or extra accessories are mentioned.
How do I decide between this 1/4-inch .2500 decimal bit and other sizes in the same series?
Choose the .2500 fractional-inch size when the hole must be exactly one-quarter inch; other diameters in the range are labelled with their own decimal equivalents.
What does the 135-degree point angle actually do when the bit is in a drill press or hand drill?
The 135-degree split point centres itself on contact, reduces walking and lowers thrust force, which is especially useful in hard materials such as stainless steel.
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