The Wrench,box, cataloged under National Stock Number 5120-01-078-4818, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-078-4818 |
| Item Name | Wrench,box |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Status | ACTIVE |
| Large End Head Thickness | 0.812 INCHES MAXIMUM IN |
| Small End Head Thickness | 0.719 INCHES MAXIMUM IN |
| Large End Outside Diameter | 1.812 INCHES MAXIMUM IN |
| Wrenching Surface Size | 1.062 INCHES NOMINAL FIRST END IN |
| Wrenching Surface Size | 1.062 INCHES MINIMUM AND 1.250 INCHES MAXIMUM SECOND END IN |
| Style Designator | DEEP ANGULAR OFFSET DOUBLE HEAD |
| Small End Outside Diameter | 1.562 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 1 TYPE AND 2 CLASS AND 1 STYLE |
| Wrenching End Offset Angle | 40.0 DEGREES MINIMUM AND 65.0 DEGREES MAXIMUM |
| Wrenching Surface Shape | 12 POINT BOTH ENDS INTERNAL |
| Surface Treatment | CHROMIUM OVERALL |
| Special Markings | WRENCH SIZE |
| 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 |
|---|---|
| XV3440 | 5/9 Secondary reference Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc |
| GGG-W-636 | 4/1 Identification reference U.S. Government activity |
NSN 5120-01-078-4818 is a Wrench,box, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
Key specifications for 5120-01-078-4818: Large End Head Thickness: 0.812 INCHES MAXIMUM IN; Small End Head Thickness: 0.719 INCHES MAXIMUM IN; Large End Outside Diameter: 1.812 INCHES MAXIMUM IN; Wrenching Surface Size: 1.062 INCHES NOMINAL FIRST END IN. 13 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.