Chicago-Latrobe
Chicago-Latrobe 42621 135 Degree Heavy-Duty Jobber Length Drill Bit 21/64 in
Drills 21/64 in holes with a 135 degree split-point tip made from TiAlN-coated high-speed steel
- TypeDrill Bits
- 135-degree split point starts on contact without walking
- 21/64-inch diameter matches precise fractional sizing needs
- High-speed steel body resists wear in tough materials
- TiAlN coating reduces friction and extends cutting life
- Jobber-length shank fits standard drill chucks securely
Chicago-Latrobe 42621 Drill Bit
The Chicago-Latrobe 42621 is a heavy-duty jobber length drill bit designed for general-purpose drilling tasks. It features a 135-degree split point made from High Speed Steel with a TiAlN coating for wear resistance. This bit suits machinists and maintenance technicians who need reliable fractional-inch tooling.
Suits precise fractional drilling.
This bit suits users who require a 21/64 inch fractional size with a split point for accurate starting and reduced walking. The decimal equivalent is .3281 inches. Builders who need through-coolant capability or multiple coolant holes should look at different tooling, as this bit has zero coolant holes and is non-coolant through.
135-degree split point geometry decides fit
The single specification that decides whether this is the right part is the 135-degree split point geometry. This angle and point type combination centres the bit quickly in steel and other hard materials without a pilot hole. If your application demands a different point angle or a standard chisel point, this bit will not meet that requirement.
Highlights
- 135-degree split point starts on contact without walking
- 21/64-inch diameter matches precise fractional sizing needs
- High-speed steel body resists wear in tough materials
- TiAlN coating reduces friction and extends cutting life
- Jobber-length shank fits standard drill chucks securely
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
Will the 21/64 in shank fit a standard three-jaw chuck?
Yes, the 21/64 in fractional-inch shank fits any standard three-jaw drill chuck that accepts that diameter.
How do I start the hole without the bit walking on hard steel?
The 135-degree split point centres itself on contact; apply steady pressure and let the split point bite before increasing speed.
When should I replace this high-speed steel bit?
Replace it when the cutting lips are rounded, the split point no longer self-centres, or the TiAlN coating shows visible wear.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
