Cle-Line
Cle-Line C18654 135 Degree Heavy-Duty Parabolic Jobber Length Drill Bit
A 7/16 inch high-speed steel jobber drill bit with a 135-degree split point and TiN coating for general-purpose drilling
- TypeDrill Bits
- 135-degree split point starts on contact without wandering
- High-speed steel with TiN coating resists wear and heat
- Jobber length gives standard reach for general drilling
- 7/16 in fractional size matches common fastener holes
- Decimal equivalent .4375 simplifies tap and clearance calculations
Cle-Line C18654 135° Jobber Drill Bit
The Cle-Line C18654 is a heavy-duty jobber length drill bit designed for general-purpose metal drilling. It features a 135-degree split point geometry that reduces walking and starts accurately on contact. The high-speed steel construction provides durability for demanding workshop tasks. A titanium nitride coating adds surface hardness and extends cutting life.
Suited for fractional-inch metalwork.
This bit suits machinists and maintenance technicians drilling 7/16 inch holes in steel or alloy materials. The split point design helps operators who need precise hole placement without centre punching. Buyers requiring through-coolant delivery or coolant hole configurations should look at alternative tooling. The non-coolant-through design limits its use in high-volume production environments needing internal lubrication.
7/16 inch capacity with TiN wear resistance
The .4375 decimal equivalent diameter handles standard fractional sizing for bolt clearance and tapping applications. High-speed steel substrate withstands typical jobber length drilling forces in ferrous materials. TiN coating improves heat resistance and reduces friction during extended cutting cycles. The tool reaches its limit in hardened steels or exotic alloys requiring carbide substrates or specialised geometries.
Highlights
- 135-degree split point starts on contact without wandering
- High-speed steel with TiN coating resists wear and heat
- Jobber length gives standard reach for general drilling
- 7/16 in fractional size matches common fastener holes
- Decimal equivalent .4375 simplifies tap and clearance calculations
Specifications
| Brand | CLE-LINE |
|---|---|
| Type | Drill Bits |
Questions about this item
What chuck size do I need for the 7/16 inch drill bit?
Use a chuck that opens to at least 0.4375 inch (7/16 in) to grip the shank securely.
Can I run this bit in an older 3/8 inch drill?
Only if the drill's chuck capacity reaches 7/16 in; otherwise the shank will not clamp.
How do I confirm the 135 degree split point is working?
The bit should start on contact without wandering and produce short, curled chips in steel.
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