The Wrench,box, cataloged under National Stock Number 5120-01-025-6581, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5120-01-025-6581 |
| Item Name | Wrench,box |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Status | ACTIVE |
| Large End Head Thickness | 0.219 INCHES NOMINAL IN |
| Small End Head Thickness | 0.188 INCHES NOMINAL IN |
| Large End Outside Diameter | 0.469 INCHES NOMINAL IN |
| Wrenching Surface Size | 0.250 INCHES NOMINAL FIRST END IN |
| Wrenching Surface Size | 0.312 INCHES NOMINAL SECOND END IN |
| Style Designator | SHALLOW ANGULAR OFFSET DOUBLE HEAD |
| Small End Outside Diameter | 0.391 INCHES NOMINAL IN |
| Wrenching End Offset Angle | 15.0 DEGREES NOMINAL |
| Wrenching Surface Shape | SPLINE BOTH ENDS INTERNAL |
| Wrenching Surface Flute Quantity | 12 |
| Surface Treatment | CHROMIUM 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 |
|---|---|
| MIL-W-8982/2 | 4/1 Identification reference U.S. Government activity |
| M8982/2-02 | 2/2 Government specification standardization U.S. Government activity |
NSN 5120-01-025-6581 is a Wrench,box, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5120-01-367-3307. Verify interchangeability with system specifications before substitution.
Key specifications for 5120-01-025-6581: Large End Head Thickness: 0.219 INCHES NOMINAL IN; Small End Head Thickness: 0.188 INCHES NOMINAL IN; Large End Outside Diameter: 0.469 INCHES NOMINAL IN; Wrenching Surface Size: 0.250 INCHES NOMINAL FIRST END IN. 12 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.