The Washer,flat, cataloged under National Stock Number 5310-00-006-7920, 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 9 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 | 5310-00-006-7920 |
| Primary Part Number | MB300-332 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Martin-Baker Aircraft Company Limited |
| Status | ACTIVE |
| Outside Left Corner Chamfer Angle | 45.0 DEGREES NOMINAL |
| Overall Diameter | 0.750 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Right Corner Chamfer Angle | 45.0 DEGREES NOMINAL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.437 INCHES NOMINAL IN |
| Thickness | 0.080 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 |
|---|---|
| MB300-332 PRIMARY | Martin-Baker Aircraft Company Limited (GBR) |
NSN 5310-00-006-7920 is a Washer,flat, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-006-7920 has 1 manufacturer part number on file: MB300-332 (Martin-Baker Aircraft Company Limited).
Key specifications for MB300-332: Outside Left Corner Chamfer Angle: 45.0 DEGREES NOMINAL; Overall Diameter: 0.750 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Outside Right Corner Chamfer Angle: 45.0 DEGREES NOMINAL. 9 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.