The Socket,socket Wrench, cataloged under National Stock Number 5120-01-447-2001, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-447-2001 |
| Primary Part Number | FSS181 |
| Item Name | Socket,socket Wrench |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc |
| Status | ACTIVE |
| Drive Surface Size | 0.375 INCHES NOMINAL SINGLE END IN |
| Wrenching Surface Size | 0.562 INCHES NOMINAL SINGLE END IN |
| Wrenching End Outside Diameter | 0.844 INCHES NOMINAL IN |
| Style Designator | INTERNAL-INTERNAL |
| Features Provided | MANUAL TOOL |
| Wrenching Surface Shape | 6 POINT SINGLE END INTERNAL |
| Drive End Shape | SQUARE SINGLE END INTERNAL |
| Wrenching End Opening Depth | 0.406 INCHES NOMINAL IN |
| Surface Treatment | CHROMIUM OVERALL |
| Drive End Outside Diameter | 0.719 INCHES NOMINAL IN |
| 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 5120-01-447-2001 is a Socket,socket Wrench, manufactured by Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-447-2001 has 2 manufacturer part numbers on file: FSS181 (Snap-on Uk Holdings Limited), FSS181 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc).
Key specifications for FSS181: Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN; Wrenching Surface Size: 0.562 INCHES NOMINAL SINGLE END IN; Wrenching End Outside Diameter: 0.844 INCHES NOMINAL IN; Style Designator: INTERNAL-INTERNAL. 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.