The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-208-2260, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-208-2260 |
| Primary Part Number | 6739971-054 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Washer Outside Diameter | 0.536 INCHES MAXIMUM IN |
| Width Across Flats | 0.431 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Temp Rating | 550.0 FAHRENHEIT NOMINAL DEGF |
| Washer Thickness | 0.070 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5024 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 1137 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 |
|---|---|
| 6739971-054 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 52Z1835-054 PRIMARY | General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp (USA) |
| Reference | Meaning |
|---|---|
| 52Z1835-054 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-00-208-2260 is a Nut,self-Locking,extended Washer, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-208-2260 has 2 manufacturer part numbers on file: 6739971-054 (Allison Transmission Inc Dba Allison Transmission, Inc), 52Z1835-054 (General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp).
Key specifications for 6739971-054: Overall Height: 0.344 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN; Washer Outside Diameter: 0.536 INCHES MAXIMUM IN; Width Across Flats: 0.431 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 15 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.