The Wrench,open End, cataloged under National Stock Number 5120-01-616-3441, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5120-01-616-3441 |
| Primary Part Number | J3055B |
| Item Name | Wrench,open End |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | The Stanley Works Dba Stanley Proto |
| Status | ACTIVE |
| Large End Head Angle | 15.0 DEGREES NOMINAL |
| Large End Head Thickness | 0.500 INCHES NOMINAL IN |
| Small End Head Thickness | 0.500 INCHES NOMINAL IN |
| Small End Head Angle | 15.0 DEGREES NOMINAL |
| Wrenching Surface Size | 1.250 INCHES NOMINAL FIRST END IN |
| Wrenching Surface Size | 1.313 INCHES NOMINAL SECOND END IN |
| Style Designator | DOUBLE HEAD |
| Wrenching Surface Shape | OVAL BOTH ENDS INTERNAL |
| 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 |
NSN 5120-01-616-3441 is a Wrench,open End, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-616-3441 has 2 manufacturer part numbers on file: 1ANM5 (W.w. Grainger, Inc. Div Government Sales Division), J3055B (The Stanley Works Dba Stanley Proto).
Key specifications for J3055B: Large End Head Angle: 15.0 DEGREES NOMINAL; Large End Head Thickness: 0.500 INCHES NOMINAL IN; Small End Head Thickness: 0.500 INCHES NOMINAL IN; Small End Head Angle: 15.0 DEGREES NOMINAL. 10 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.