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Reference Number Reference Number |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (DefenseAcquisition Regulations Supplement)  |
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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.
Lock pin screws hold the insert in place.
For technical drawings and 3-D models, click on a part number.
Lock Pin Screws—Threaded on One End
| Lg. | Reference No. | Right-Hand Thread Lg. | Drive Style | Drive Size | Material | Min. Rockwell Hardness | Each | |
8-32 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 0.322" | NL-23 | 0.09" | Hex | 1/16" | Steel | C42 | 000000000 | 00000 |
10-32 | ||||||||
| 0.347" | NL-33 | 0.109" | Hex × Hex | 5/64" | Steel | C42 | 000000000 | 0000 |
| 0.41" | NL-33L | 0.109" | Hex × Hex | 5/64" | Steel | C42 | 000000000 | 0000 |
| 0.425" | NL-43 | 0.109" | Hex × Hex | 5/64" | Steel | C42 | 000000000 | 0000 |
| 0.452" | NL-34 | 0.109" | Hex × Hex | 5/64" | Steel | C42 | 000000000 | 0000 |
| 0.513" | NL-34L | 0.109" | Hex × Hex | 5/64" | Steel | C42 | 000000000 | 0000 |
1/4"-28 | ||||||||
| 0.519" | NL-44 | 0.14" | Hex × Hex | 3/32" | Steel | C42 | 000000000 | 0000 |
| 0.676" | NL-46 | 0.14" | Hex × Hex | 3/32" | Steel | C42 | 000000000 | 0000 |
| 0.733" | NL-46L | 0.14" | Hex × Hex | 3/32" | Steel | C42 | 000000000 | 0000 |
5/16"-24 | ||||||||
| 0.646" | NL-55 | 0.156" | Hex × Hex | 1/8" | Steel | C42 | 000000000 | 0000 |
| 0.701" | NL-56 | 0.156" | Hex × Hex | 1/8" | Steel | C42 | 000000000 | 0000 |
| 0.802" | NL-57 | 0.156" | Hex × Hex | 1/8" | Steel | C42 | 000000000 | 0000 |
| 0.857" | NL-58 | 0.156" | Hex × Hex | 1/8" | Steel | C42 | 000000000 | 0000 |
| 0.885" | NL-58L | 0.156" | Hex × Hex | 1/8" | Steel | C42 | 000000000 | 0000 |
3/8"-24 | ||||||||
| 0.701" | NL-66 | 0.156" | Hex × Hex | 9/64" | Steel | C42 | 000000000 | 0000 |
| 0.821" | NL-66L | 0.156" | Hex × Hex | 9/64" | Steel | C42 | 000000000 | 0000 |
| 0.857" | NL-68 | 0.156" | Hex × Hex | 9/64" | Steel | C42 | 000000000 | 0000 |
| 0.948" | NL-68L | 0.156" | Hex × Hex | 9/64" | Steel | C42 | 000000000 | 0000 |
7/16"-20 | ||||||||
| 1.167" | NL-810 | 0.203" | Hex × Hex | 5/32" | Steel | C42 | 000000000 | 0000 |
