Cleveland
Cleveland Cobalt M42 Square Tool Bit 3/8 x 3 in
Cobalt M42 square tool bit for lathe work, 3/8 in width and height by 3 in long
- Cobalt M42 steel resists heat during heavy cuts
- 3/8 in square cross-section fits standard tool holders
- 3 in overall length provides rigid support
- Non-bevelled blank ready for custom grinding
- Cleveland brand trusted for industrial tooling
Cobalt M42 Square Tool Bit
This Cleveland Cobalt M42 square tool bit is a non-beveled lathe tool blank suited for precision turning and facing operations. The cobalt alloy provides high red hardness for extended tool life when machining abrasive or high-strength materials. It serves machinists and maintenance technicians who grind custom cutting profiles.
Suits custom grinding, not indexable holders
This blank suits users who grind their own tool geometry on a bench or pedestal grinder. Builders who need ready-to-use indexable inserts or pre-formed turning tools with specific chip-breakers should look at something else. The non-beveled square profile requires full geometry creation before use.
3/8 inch square by 3 inch overall length
The single specification that decides fit is the 3/8 in square cross-section combined with a 3 in overall length. This dimension set determines holder compatibility and maximum reach for the intended lathe work. Verify your tool post accepts this exact shank size before ordering.
Highlights
- Cobalt M42 steel resists heat during heavy cuts
- 3/8 in square cross-section fits standard tool holders
- 3 in overall length provides rigid support
- Non-bevelled blank ready for custom grinding
- Cleveland brand trusted for industrial tooling
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
What size tool holder or lathe turret is needed to clamp this 3/8 in square shank?
The bit has a 3/8 in by 3/8 in square cross-section, so the holder must accept that exact square dimension.
Will this Cobalt M42 blank outlast the high-speed steel blanks I already use for the same cuts?
Cobalt M42 contains 8 % cobalt and offers higher hot hardness than standard HSS, so it holds its edge longer in the same turning operations.
How can I confirm the bit is cutting cleanly once I grind and install it?
A properly ground edge will produce a continuous ribbon chip and a smooth surface finish without chatter on the workpiece.
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