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Screws for Carbide Insert Holders
When it's time to replace the screws in a carbide insert holder, use the reference number on your holder to find the right size.
Clamp screws hold insert clamps at the proper height for tooling.
For technical drawings and 3-D models, click on a part number.
Clamp Screws—Threaded on Both Ends
| Lg. | Reference No. | Right-Hand Thread Lg. | Left-Hand Thread Lg. | Drive Style | Drive Size | Material | Min. Rockwell Hardness | Thread Fit  | Each | |
10-32 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.59" | CS-205 | 0.19" | 0.19" | Hex × Hex | 3/32" | Steel | C42 | Class 3A | 000000000 | 00000 |
| 3/4" | CS-220 | 0.25" | 0.25" | Hex × Hex | 3/32" | Steel | C42 | Class 3A | 000000000 | 0000 |
| 0.84" | CS-228 | 0.31" | 0.31" | Hex × Hex | 3/32" | Steel | C42 | Class 3A | 000000000 | 0000 |
| 7/8" | CS-230 | 0.5" | 0.25" | Hex × Hex | 3/32" | Steel | C42 | Class 3A | 000000000 | 0000 |
1/4"-28 | ||||||||||
| 0.69" | CS-306 | 0.28" | 0.28" | Hex × Hex | 1/8" | Steel | C42 | Class 3A | 000000000 | 0000 |
| 0.81" | CS-320 | 0.28" | 0.28" | Hex × Hex | 1/8" | Steel | C42 | Class 3A | 000000000 | 0000 |
| 0.81" | CS-321 | 0.28" | 0.28" | Hex × Hex | 3/32" | Steel | C42 | Class 3A | 000000000 | 0000 |
| 1" | CS-330 | 0.37" | 0.37" | Hex × Hex | 1/8" | Steel | C42 | Class 3A | 000000000 | 0000 |
| 1.16" | CS-335 | 0.45" | 0.45" | Hex × Hex | 1/8" | Steel | C42 | Class 3A | 000000000 | 0000 |
1/4"-32 | ||||||||||
| 0.564" | CS-304 | 0.221" | 0.221" | Hex | 1/8" | Steel | C42 | Class 3A | 000000000 | 0000 |
5/16"-24 | ||||||||||
| 1" | CS-410 | 0.25" | 0.5" | Hex × Hex | 5/32" | Steel | C42 | Class 3A | 000000000 | 0000 |
| 1.12" | CS-420 | 0.41" | 0.47" | Hex × Hex | 5/32" | Steel | C42 | Class 3A | 000000000 | 0000 |
| 1.156" | CS-425 | 0.406" | 0.5" | Hex × Hex | 5/32" | Steel | C42 | Class 3A | 000000000 | 0000 |
| 1 1/4" | CS-430 | 0.5" | 0.5" | Hex × Hex | 5/32" | Steel | C42 | Class 3A | 000000000 | 0000 |
5/16"-32 | ||||||||||
| 1 1/4" | CS-416 | 0.375" | 0.375" | Hex | 5/32" | Steel | C42 | Class 3A | 000000000 | 0000 |