Cle-Line
Cle-Line C23141 135 Degree Heavy-Duty Jobber Length Drill Bit 1801 Steam
5/16 inch jobber drill bit with 135 degree split point in high-speed steel and black oxide finish
- TypeDrill Bits
- MaterialHAWA
- 135-degree split point starts on contact without wandering
- High-speed steel construction resists wear in tough materials
- Black oxide finish reduces friction and chip build-up
- Jobber length gives standard reach for general drilling
- Fractional 5/16 inch size fits common chuck capacities
135° Split-Point Jobber Bit
The Cle-Line C23141 is a heavy-duty jobber length drill bit designed for general-purpose metal drilling. Its 135-degree split point reduces walking and starts holes cleanly without a centre punch. The black oxide finish adds lubricity and resists corrosion during repetitive use. It suits maintenance technicians and fabricators who need reliable fractional-inch sizing.
Verify Shank Fit And Material Compatibility
Confirm that your drill chuck accepts a straight shank of this diameter before ordering. The bit is made from high-speed steel with a black oxide coating and is not coolant-through, so it is intended for dry or externally lubricated cutting. Ensure the workpiece material matches the capabilities of uncoated HSS to avoid premature wear or breakage.
Black Oxide Finish Improves Chip Flow
The steam-treated black oxide surface holds cutting fluid better than bare steel, helping to evacuate chips and reduce heat buildup. No coolant holes are present, so external lubrication is required for deeper holes. The split-point geometry eliminates the need for a separate centre drill in most applications, speeding up setup time on the job.
Highlights
- 135-degree split point starts on contact without wandering
- High-speed steel construction resists wear in tough materials
- Black oxide finish reduces friction and chip build-up
- Jobber length gives standard reach for general drilling
- Fractional 5/16 inch size fits common chuck capacities
Specifications
| Brand | CLE-LINE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
What comes in the box and what must I buy separately?
The box contains the Cle-Line C23141 jobber length drill bit with a 135 degree split point and black oxide finish; no additional accessories are included.
Which version or capacity should I choose for a 5/16 inch hole?
Choose the C23141 model, which is the 5/16 inch (0.3125 decimal equivalent) fractional inch drill bit designed for that specific hole size.
How does the 135 degree split point perform in a hand drill versus a press?
The 135 degree split point reduces walking and starts accurately in both hand drills and drill presses, while the black oxide finish helps resist wear in high speed steel.
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