The Wrench,box, cataloged under National Stock Number 5120-01-503-1870, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-503-1870 |
| Item Name | Wrench,box |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Status | ACTIVE |
| Large End Head Thickness | 0.703 INCHES NOMINAL IN |
| Small End Head Thickness | 0.656 INCHES NOMINAL IN |
| Large End Outside Diameter | 1.562 INCHES NOMINAL IN |
| Wrenching Surface Size | 1.125 INCHES NOMINAL SECOND END IN |
| Wrenching Surface Size | 1.000 INCHES NOMINAL FIRST END IN |
| Style Designator | SHALLOW ANGULAR OFFSET DOUBLE HEAD |
| Small End Outside Diameter | 1.500 INCHES NOMINAL IN |
| Wrenching End Offset Angle | 15.0 DEGREES NOMINAL |
| Wrenching Surface Shape | 12 POINT BOTH ENDS INTERNAL |
| 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 |
|---|---|
| 26-763 | 3/9 Design control — primary reference Apex Tool Group, Llc Dba Nicholson |
| 26-763 | 5/9 Secondary reference Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. |
| 26-763 | 5/9 Secondary reference Armstrong Bros Tool Co |
NSN 5120-01-503-1870 is a Wrench,box, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3655-01-601-2119, 2590-01-673-7164. Verify interchangeability with system specifications before substitution.
Key specifications for 5120-01-503-1870: Large End Head Thickness: 0.703 INCHES NOMINAL IN; Small End Head Thickness: 0.656 INCHES NOMINAL IN; Large End Outside Diameter: 1.562 INCHES NOMINAL IN; Wrenching Surface Size: 1.125 INCHES NOMINAL SECOND END IN. 11 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.