The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-776-7364, 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 17 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-776-7364 |
| Primary Part Number | 7767364 |
| 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 | 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| Width Across Flats | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Features Provided | CASEHARDENED |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.562 INCHES IN |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Countersink Angle | 108.0 DEGREES MINIMUM AND 112.0 DEGREES MAXIMUM NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 4140 OR STEEL COMP 8640 OR 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 |
NSN 5310-00-776-7364 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 5310-00-776-7364 has 2 manufacturer part numbers on file: 7767364 (U S Army Tank Automotive Command Amsta-Im-Mm), 502123 (Renk America Llc Div Renk America).
3 possible matches (shared part number, not a government interchangeability claim): 5985-01-312-3166, 6220-01-437-1264, 3825-01-513-5786. Verify interchangeability with system specifications before substitution.
Key specifications for 7767364: Overall Height: 0.432 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN; Washer Outside Diameter: 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN; Width Across Flats: 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.