Cle-Line
Cle-Line C18017 Jobber Length Drill Bit 21/64 in
A 21/64 inch jobber-length drill bit with a 135-degree split point made from high-speed steel
- TypeDrill Bits
- Precise 21/64 inch drilling with fractional sizing
- 135-degree split point reduces walking on hard materials
- High-speed steel construction resists heat during extended use
- Black and gold finish identifies flute geometry at a glance
- Jobber length suits general-purpose drilling in metal and wood
Application
The Cle-Line C18017 is a jobber length drill bit sized at 21/64 in with a decimal equivalent of .3281. It is made from high speed steel with a black and gold finish and features a 135 degree split point for self-centering starts. The design suits general purpose drilling in metal, wood and plastic where a standard length is required.
Suitability
This bit fits users who need a fractional inch size for maintenance, fabrication or repair work in ferrous and non-ferrous materials. The split point reduces walking on hard surfaces without a centre punch. Buyers who require coolant through holes for deep hole drilling or a different point angle for specialised alloys should look at alternative tooling.
Critical specification
The 135 degree split point angle is the single specification that determines whether this bit matches the application. It provides faster penetration and less thrust than standard points in comparable high speed steel construction. Verify the angle and fractional size against the job requirements before purchase.
Highlights
- Precise 21/64 inch drilling with fractional sizing
- 135-degree split point reduces walking on hard materials
- High-speed steel construction resists heat during extended use
- Black and gold finish identifies flute geometry at a glance
- Jobber length suits general-purpose drilling in metal and wood
Specifications
| Brand | CLE-LINE |
|---|---|
| Type | Drill Bits |
Questions about this item
When will the 21/64 inch split point need resharpening?
Resharpen when the 135 degree split point no longer self-centres or when chips turn powdery instead of curling.
What limit appears first during non-stop drilling with the high-speed steel bit?
Heat buildup at the cutting edges softens the steel before the shank or flutes show wear.
How hot and loud does the bit get in all-day production drilling?
The black-and-gold finish runs warm to the touch and produces a steady high-pitched whine; coolant pauses keep both manageable.
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