Cle-Line
Cle-Line C22691 #21 118° Jobber Drill Bit 1899
Drills 0.1590-inch holes with a 118-degree conventional point in high-speed steel with black oxide finish
- TypeDrill Bits
- MaterialHAWA
- Precision drilling with 118° conventional point
- High-speed steel construction for durability
- Black oxide finish resists corrosion
- #21 size with 0.1590 decimal equivalent
- Jobber length suits general-purpose applications
Cle-Line #21 Jobber Drill Bit
The Cle-Line C22691 is a #21 jobber length drill bit built for general-purpose drilling tasks. It suits maintenance technicians and workshop users who need a reliable high-speed steel bit for everyday metalworking.
118 Degree Point Angle Geometry
The conventional 118 degree point angle provides effective centring and cutting action in standard materials. Black oxide finish adds lubricity and reduces chip welding during normal drilling operations. No coolant-through design means external lubrication is used when required.
0.1590 Inch Decimal Equivalent
The #21 wire gauge size corresponds to a 0.1590 inch decimal equivalent, which determines the exact hole diameter produced. Buyers needing a different hole size or a split-point geometry for harder alloys should select another bit.
Highlights
- Precision drilling with 118° conventional point
- High-speed steel construction for durability
- Black oxide finish resists corrosion
- #21 size with 0.1590 decimal equivalent
- Jobber length suits general-purpose applications
Specifications
| Brand | CLE-LINE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
How do I install the #21 jobber drill bit in my drill chuck, and what step do people often get wrong?
Open the chuck fully, insert the straight shank of the #21 bit until it seats firmly, then tighten the chuck securely; the step people often miss is verifying the bit runs true before drilling.
What maintenance or replacement will the #21 jobber drill bit need later?
The high-speed steel #21 bit will dull with use; resharpen the 118-degree conventional point or replace the bit when cutting performance drops.
What limit shows up first on the #21 jobber bit under sustained drilling?
Heat buildup at the 118-degree point causes the high-speed steel to lose hardness fastest during sustained drilling, so use cutting fluid and reduce feed pressure.
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