The Washer,flat, cataloged under National Stock Number 5310-01-092-5496, 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 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-092-5496 |
| Primary Part Number | 8356625-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Heat Treatment | QUENCHED AND TEMPERED |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Features Provided | CASEHARDENED |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1035 OR STEEL COMP 1040 OR STEEL COMP 1045 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.281 INCHES NOMINAL IN |
| Thickness | 0.051 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 8356625-1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| ST52781 | Rolls-Royce Airlines (GBR) |
| 9422845 | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 5310010925496 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 8356625-1 | 5/9 Secondary reference Detroit Diesel (overseas Distribution Corp) |
NSN 5310-01-092-5496 is a Washer,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-092-5496 has 3 manufacturer part numbers on file: 8356625-1 (U S Army Tank Automotive Command Amsta-Im-Mm), ST52781 (Rolls-Royce Airlines), 9422845 (General Motors Corp).
Key specifications for 8356625-1: Overall Diameter: 0.625 INCHES NOMINAL IN; Heat Treatment: QUENCHED AND TEMPERED; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM; Cross-Sectional Shape Style: RECTANGULAR. 10 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.