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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.
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 | 91442A210 | 00000 |
| 3/4" | CS-220 | 0.25" | 0.25" | Hex × Hex | 3/32" | Steel | C42 | Class 3A | 91442A250 | 0000 |
| 0.84" | CS-228 | 0.31" | 0.31" | Hex × Hex | 3/32" | Steel | C42 | Class 3A | 91442A260 | 0000 |
| 7/8" | CS-230 | 0.5" | 0.25" | Hex × Hex | 3/32" | Steel | C42 | Class 3A | 91442A270 | 0000 |
1/4"-28 | ||||||||||
| 0.69" | CS-306 | 0.28" | 0.28" | Hex × Hex | 1/8" | Steel | C42 | Class 3A | 91442A320 | 0000 |
| 0.81" | CS-320 | 0.28" | 0.28" | Hex × Hex | 1/8" | Steel | C42 | Class 3A | 91442A360 | 0000 |
| 0.81" | CS-321 | 0.28" | 0.28" | Hex × Hex | 3/32" | Steel | C42 | Class 3A | 91442A370 | 0000 |
| 1" | CS-330 | 0.37" | 0.37" | Hex × Hex | 1/8" | Steel | C42 | Class 3A | 91442A390 | 0000 |
| 1.16" | CS-335 | 0.45" | 0.45" | Hex × Hex | 1/8" | Steel | C42 | Class 3A | 91442A400 | 0000 |
1/4"-32 | ||||||||||
| 0.564" | CS-304 | 0.221" | 0.221" | Hex | 1/8" | Steel | C42 | Class 3A | 91442A310 | 0000 |
5/16"-24 | ||||||||||
| 1" | CS-410 | 0.25" | 0.5" | Hex × Hex | 5/32" | Steel | C42 | Class 3A | 91442A410 | 0000 |
| 1.12" | CS-420 | 0.41" | 0.47" | Hex × Hex | 5/32" | Steel | C42 | Class 3A | 91442A440 | 0000 |
| 1.156" | CS-425 | 0.406" | 0.5" | Hex × Hex | 5/32" | Steel | C42 | Class 3A | 91442A450 | 0000 |
| 1 1/4" | CS-430 | 0.5" | 0.5" | Hex × Hex | 5/32" | Steel | C42 | Class 3A | 91442A460 | 0000 |
5/16"-32 | ||||||||||
| 1 1/4" | CS-416 | 0.375" | 0.375" | Hex | 5/32" | Steel | C42 | Class 3A | 91442A430 | 0000 |