The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-752-1461, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-752-1461 |
| Primary Part Number | 7521461 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Washer Outside Diameter | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN |
| Width Across Flats | 0.610 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.095 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Features Provided | CASEHARDENED |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN OR PREVAILING TORQUE ALL METAL DESIGN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 8740 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 |
|---|---|
| 7521461 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 6763773 | General Motors Corp (USA) |
| 6763773 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| 62.21.019 | 5/9 Secondary reference Sapa Operaciones SL |
| 5310007521461 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5310-00-752-1461 is a Nut,self-Locking,extended Washer, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-752-1461 has 3 manufacturer part numbers on file: 7521461 (U S Army Tank Automotive Command Amsta-Im-Mm), 6763773 (General Motors Corp), 6763773 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 7521461: Overall Height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Washer Outside Diameter: 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN; Width Across Flats: 0.610 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Thread Series: UNF. 14 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.