Chicago-Latrobe
Chicago-Latrobe 50876 Screw Machine Drill Bit #21 135 Degrees
A #21 cobalt steel drill bit with a 135-degree split point for precise screw machine drilling
- TypeDrill Bits
- MaterialCobalt Steel
- #21 size matches precise hole requirements
- 135-degree split point starts cleanly without wandering
- Cobalt steel resists heat for longer cutting life
- Straw finish identifies cobalt grade at a glance
- Right-hand cutting suits standard drill chucks
Chicago-Latrobe 50876 Drill Bit
The Chicago-Latrobe 50876 is a screw machine drill bit sized #21 with a decimal equivalent of .1590. It is built for machinists and maintenance technicians who need accurate holes in metal using portable or stationary equipment.
Cobalt Steel Construction and Split Point
Cobalt steel construction provides high heat resistance and extended cutting life in tough alloys. The 135 degree split point is self-centering, reducing walk on curved surfaces and lowering the thrust required during hand-held or machine drilling.
Replaces Worn High-Speed Steel Bits
This bit replaces dull or broken high-speed steel drills when hole quality and tool life become critical. The upgrade is worth it for repetitive production runs or tough materials where frequent resharpening slows the job down.
Highlights
- #21 size matches precise hole requirements
- 135-degree split point starts cleanly without wandering
- Cobalt steel resists heat for longer cutting life
- Straw finish identifies cobalt grade at a glance
- Right-hand cutting suits standard drill chucks
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | Cobalt Steel |
Questions about this item
What does the 135-degree split point do for this drill bit?
The 135-degree split point enables self-centering starts and reduces walking on hard materials, improving accuracy in screw-machine applications.
What shank dimensions does the #21 size require for toolholder fit?
The #21 size has a 0.1590-inch decimal equivalent diameter, so the toolholder or collet must accept that exact round shank.
How should this cobalt steel bit be installed to avoid premature wear?
Secure the bit fully in the chuck with the flutes clear of the jaws, use cutting fluid, and run at the correct RPM for the material to prevent overheating the cobalt edge.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
