The Key,socket Head Screw, cataloged under National Stock Number 5120-01-431-6000, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-431-6000 |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Status | ACTIVE |
| Wrenching Surface Size | 10.0 MILLIMETERS NOMINAL BOTH ENDS MM |
| Style Designator | L-HANDLE |
| Features Provided | BALL END AND LONG SERIES |
| Wrenching Surface Shape | HEXAGON BOTH ENDS 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 |
| Reference | Meaning |
|---|---|
| 86263 | 3/1 Design control — primary reference Irwin Industrial Tool Company |
NSN 5120-01-431-6000 is a Key,socket Head Screw, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5120-01-434-9438. Verify interchangeability with system specifications before substitution.
Key specifications for 5120-01-431-6000: Wrenching Surface Size: 10.0 MILLIMETERS NOMINAL BOTH ENDS MM; Style Designator: L-HANDLE; Features Provided: BALL END AND LONG SERIES; Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL. 6 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.