The Key,socket Head Screw, cataloged under National Stock Number 5120-01-642-0387, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Teledyne Instruments, Inc. Dba Teledyne Webb Research. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-642-0387 |
| Primary Part Number | G-464 |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Teledyne Instruments, Inc. Dba Teledyne Webb Research |
| Status | ACTIVE |
| Wrenching Surface Size | 0.188 INCHES NOMINAL SINGLE END IN |
| Style Designator | FIXED T-HANDLE |
| Wrenching Surface Shape | HEXAGON SINGLE END EXTERNAL |
| Surface Treatment | OXIDE OVERALL |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| G-464 PRIMARY | Teledyne Instruments, Inc. Dba Teledyne Webb Research (USA) |
| Reference | Meaning |
|---|---|
| G-464 | 5/9 Secondary reference Webb Research Corp. |
NSN 5120-01-642-0387 is a Key,socket Head Screw, manufactured by Teledyne Instruments, Inc. Dba Teledyne Webb Research, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-642-0387 has 1 manufacturer part number on file: G-464 (Teledyne Instruments, Inc. Dba Teledyne Webb Research).
Key specifications for G-464: Wrenching Surface Size: 0.188 INCHES NOMINAL SINGLE END IN; Style Designator: FIXED T-HANDLE; Overall Length: 24.000 INCHES NOMINAL IN; Wrenching Surface Shape: HEXAGON SINGLE END EXTERNAL. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.