The Socket,socket Wrench, cataloged under National Stock Number 5120-01-620-7989, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-620-7989 |
| Primary Part Number | S-1-4-37 |
| Item Name | Socket,socket Wrench |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| Status | ACTIVE |
| Drive Surface Size | 3.25 INCHES NOMINAL SINGLE END IN |
| Wrenching Surface Size | 5.0 INCHES NOMINAL SINGLE END IN |
| Style Designator | OPEN END DOUBLE HEXAGON SOCKET, SOCKET WRENCH |
| Wrenching Surface Shape | ROUND SINGLE END EXTERNAL |
| Drive End Shape | 6 POINT SINGLE END INTERNAL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| S-1-4-37 PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
NSN 5120-01-620-7989 is a Socket,socket Wrench, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-620-7989 has 1 manufacturer part number on file: S-1-4-37 (Bird-Johnson Propeller Company, Llc).
Key specifications for S-1-4-37: Drive Surface Size: 3.25 INCHES NOMINAL SINGLE END IN; Wrenching Surface Size: 5.0 INCHES NOMINAL SINGLE END IN; Style Designator: OPEN END DOUBLE HEXAGON SOCKET, SOCKET WRENCH; Overall Length: 6.25 INCHES NOMINAL IN. 6 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.