Cubic Boron Nitride Inserts for Hardened Steel
Resisting wear and fractures when cutting hardened steel, these cubic boron nitride inserts last longer than carbide inserts. Use them for high-speed finishing and interrupted cutting applications. All have multiple cutting edges, so when an edge dulls, rotate the insert in your holder to use a sharp edge. Those with larger nose angles and tip radii have stronger cutting edges, but create more vibration and a rougher finish.
For traceability, inserts come factory sealed from the manufacturer.
Positive-rake inserts have an edge that is less than 90° to sit flat in the holder for improved cutting clearance and a better finish than negative-rake inserts. They have cutting edges on one side of the inserts.


Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insert Code | Inscribed Circle Dia. (IC) | Thick. | Cutting Edge Lg. | Tip Radius | Rake Type | For Cutting Operation | Finish | Coating Process | 1-9 | 10-Up | |
For Use On Hardened Steel | |||||||||||
| CCMW-21.50.5 | 1/4" | 3/32" | 0.08" | 0.008" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
| CCMW-21.52 | 1/4" | 3/32" | 0.07" | 1/32" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
| CCMW-32.51 | 3/8" | 5/32" | 0.07" | 1/64" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
| CCMW-32.52 | 3/8" | 5/32" | 0.07" | 1/32" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
Turning Carbide Insert Holders
Secure carbide inserts inside these holders for stable turning. They’re also known as indexable insert holders. Select a holder that’s compatible with your insert by matching the insert style and inscribed circle diameter (IC). Right-hand holders move from right to left toward the lathe chuck, left-hand holders move from left to right away from the lathe chuck, and neutral holders can cut in either direction.
S-code holders secure inserts with a screw for easy indexing. They’re the most commonly used holders with positive-rake inserts.
Holders with an offset shank are good for reaching into tight corners and when working close to the chuck.



Holders | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
For Insert | Shank | Replacement Torx Screws | Replacement Torx Keys | |||||||
| Inscribed Circle Dia. (IC) | Thick. | Wd. | Ht. | O'all Lg. | Each | Each | Each | |||
For Along-the-Length Turning, Chamfering, Facing | ||||||||||
Right Hand | ||||||||||
| 1/4" | 3/32" | 3/8" | 3/8" | 3 1/2" | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |
| 3/8" | 5/32" | 1/2" | 1/2" | 4" | 00000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3/8" | 5/32" | 5/8" | 5/8" | 4 1/2" | 00000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3/8" | 5/32" | 3/4" | 3/4" | 4 1/2" | 00000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3/8" | 5/32" | 1" | 1" | 6" | 00000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
Left Hand | ||||||||||
| 1/4" | 3/32" | 3/8" | 3/8" | 3 1/2" | 00000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3/8" | 5/32" | 1/2" | 1/2" | 4" | 00000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3/8" | 5/32" | 5/8" | 5/8" | 4 1/2" | 00000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3/8" | 5/32" | 3/4" | 3/4" | 4 1/2" | 00000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
| 3/8" | 5/32" | 1" | 1" | 6" | 00000000 | 00000 | 0000000 | 0000 | 0000000 | 0000 |
Precision Carbide Insert Holders for Machining Small Parts

Pair these holders with precision carbide inserts to cut fine details and shape small parts. Designed for use in precision lathes, also called Swiss lathes, they fit directly into a tool holder or post—no tool block needed. All are S-code holders, which means the insert is secured with a screw. They’re the most common holder used with positive-rake inserts. Also known as indexable insert holders.
Choose a holder that matches the insert style and inscribed circle diameter (IC) of your insert. Right-hand holders move from right to left toward the lathe chuck. Left-hand holders move from left to right away from the lathe chuck. Neutral holders can cut in either direction.


Holders | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Shank | For Insert | Replacement Torx Screws | Replacement Torx Keys | ||||||||||
| Wd. | Ht. | O'all Lg. | Inscribed Circle Dia. (IC) | Thick. | Material | Side Cutting Edge Angle | End Cutting Edge Angle | Each | Each | Each | |||
For Along-the-Length Turning, Facing | |||||||||||||
Right Hand | |||||||||||||
| 3/8" | 3/8" | 4 3/4" | 1/4" | 0.094" | Steel | -5° | 5° | 00000000 | 000000 | 00000000 | 00000 | 00000000 | 00000 |
| 3/8" | 3/8" | 4 3/4" | 3/8" | 0.156" | Steel | -5° | 5° | 00000000 | 00000 | 00000000 | 0000 | 00000000 | 0000 |
| 1/2" | 1/2" | 4 3/4" | 3/8" | 0.156" | Steel | -5° | 5° | 00000000 | 00000 | 00000000 | 0000 | 00000000 | 0000 |
| 5/8" | 5/8" | 4 3/4" | 3/8" | 0.156" | Steel | -5° | 5° | 00000000 | 00000 | 00000000 | 0000 | 00000000 | 0000 |
Left Hand | |||||||||||||
| 1/2" | 1/2" | 4 3/4" | 3/8" | 0.156" | Steel | -5° | 5° | 00000000 | 00000 | 00000000 | 0000 | 00000000 | 0000 |

























