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.
Negative-rake inserts have a 90° edge and sit at an angle in the holder to provide a strong cutting force for heavy duty applications. They have cutting edges on both sides of the inserts for twice the life of comparable positive-rake 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 | |||||||||||
| WNGA-432 | 1/2" | 3/16" | 0.1" | 1/32" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
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.
M-code holders secure inserts with both a top clamp and a pin lock, so they’re often used for interrupted or semi-interrupted cuts to keep inserts stable despite vibration. They’re the most commonly used holders with negative-rake inserts.
D-code holders require just a quick motion to remove inserts from their wedge clamp. However, they hold inserts less securely than M-code holders.
Holders with an offset shank are good for reaching into tight corners and when working close to the chuck.



Holders | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Insert | Shank | Replacement Clamps | Replacement Clamp Screws | Replacement Lock Pin Screws | Replacement Seats | |||||||||
| Inscribed Circle Dia. (IC) | Thick. | Wd. | Ht. | O'all Lg. | Each | Each | Each | Each | Each | |||||
For Along-the-Length Turning, Chamfering, Facing | ||||||||||||||
Right Hand | ||||||||||||||
| 3/8" | 3/16" | 3/4" | 3/4" | 4 1/2" | 00000000 | 000000 | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 |
| 1/2" | 3/16" | 3/4" | 3/4" | 4 1/2" | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 0000 | 00000000 | 0000 | 00000000 | 00000 |
| 1/2" | 3/16" | 1" | 1" | 6" | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 0000 | 00000000 | 0000 | 00000000 | 00000 |
Left Hand | ||||||||||||||
| 3/8" | 3/16" | 3/4" | 3/4" | 4 1/2" | 00000000 | 00000 | 000000 | 00 | 000000 | 00 | 000000 | 00 | 00000000 | 0000 |
| 1/2" | 3/16" | 3/4" | 3/4" | 4 1/2" | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 0000 | 00000000 | 0000 | 00000000 | 00000 |
| 1/2" | 3/16" | 1" | 1" | 6" | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 0000 | 00000000 | 0000 | 00000000 | 00000 |



Holders | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Insert | Shank | Replacement Clamps | Replacement Seats | Replacement Seat Screws | Replacement Slotted Pins | |||||||||
| Inscribed Circle Dia. (IC) | Thick. | Wd. | Ht. | O'all Lg. | Each | Each | Each | Each | Each | |||||
For Along-the-Length Turning, External Profiling | ||||||||||||||
Right Hand | ||||||||||||||
| 1/2" | 3/16" | 1" | 1" | 6" | 00000000 | 000000 | 00000000 | 000000 | 00000000 | 000000 | 00000000 | 000000 | 00000000 | 00000 |
Left Hand | ||||||||||||||
| 1/2" | 3/16" | 1" | 1" | 6" | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 000 |

























