The Washer,flat, cataloged under National Stock Number 5310-01-125-8283, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Martin-Baker Aircraft Company Limited. Government technical data includes 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-125-8283 |
| Primary Part Number | MBEU-66562 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Martin-Baker Aircraft Company Limited |
| Status | ACTIVE |
| Overall Diameter | 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Material Document and Classification | S526 MFR REF SINGLE MATERIAL RESPONSE OR S527,FSCM U1604 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.196 INCHES NOMINAL IN |
| Thickness | 0.064 INCHES NOMINAL 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 |
|---|---|
| MBEU-66562 PRIMARY | Martin-Baker Aircraft Company Limited (GBR) |
NSN 5310-01-125-8283 is a Washer,flat, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-125-8283 has 1 manufacturer part number on file: MBEU-66562 (Martin-Baker Aircraft Company Limited).
Key specifications for MBEU-66562: Overall Diameter: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Material Document and Classification: S526 MFR REF SINGLE MATERIAL RESPONSE OR S527,FSCM U1604 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.