The Wrench,socket, cataloged under National Stock Number 5120-01-648-3546, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Martin Sprocket and Gear Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-648-3546 |
| Primary Part Number | 971D |
| Item Name | Wrench,socket |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Martin Sprocket and Gear Inc |
| Status | ACTIVE |
| Wrenching Surface Size | 1.125 INCHES NOMINAL SINGLE END IN |
| Style Designator | SINGLE SOCKET T |
| Specification/standard Data | 05047-ASME B107.100 CAT 10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nondefinitive Spec/std Data | 1 TYPE AND 4 CLASS |
| Wrenching Surface Shape | HEXAGON SINGLE END 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 |
| Part Number | Manufacturer |
|---|---|
| 971D | Martin Sprocket and Gear Inc (USA) |
| Reference | Meaning |
|---|---|
| B107.110 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
| B107.10M | 5/9 Secondary reference The American Society of Mechanical Engineers |
| B107.110 CAT 10 TY1CL4 | 5/1 Secondary reference U.S. Government activity |
| B107.10M TY1CL4 | 5/9 Secondary reference U.S. Government activity |
| B107.110 CAT 10 | 5/9 Secondary reference The American Society of Mechanical Engineers |
NSN 5120-01-648-3546 is a Wrench,socket, manufactured by Martin Sprocket and Gear Inc, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-648-3546 has 1 manufacturer part number on file: 971D (Martin Sprocket and Gear Inc).
Key specifications for 971D: Wrenching Surface Size: 1.125 INCHES NOMINAL SINGLE END IN; Style Designator: SINGLE SOCKET T; Overall Length: 8.250 INCHES NOMINAL IN; Specification/standard Data: 05047-ASME B107.100 CAT 10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. 7 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.