The Washer,flat, cataloged under National Stock Number 5310-01-609-4591, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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 | 5310-01-609-4591 |
| Primary Part Number | 803-7526214-304A-C |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 11.500 INCHES NOMINAL IN |
| Overall Diameter | 0.812 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | BLANK RECTANGULAR |
| Peripheral Shape Style | ROUND W/FLATS |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Width Across Flats | 0.450 INCHES NOMINAL IN |
| Center Hole Shape Style | ROUND W/FLATS |
| Hole Diameter | 0.401 INCHES NOMINAL IN |
| Thickness | 0.650 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 |
|---|---|
| 803-7526214-304A-C PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-609-4591 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-609-4591 has 1 manufacturer part number on file: 803-7526214-304A-C (Naval Sea Systems Command).
Key specifications for 803-7526214-304A-C: Width Across Flats: 11.500 INCHES NOMINAL IN; Overall Diameter: 0.812 INCHES NOMINAL IN; Cross-Sectional Shape Style: BLANK RECTANGULAR; Peripheral Shape Style: ROUND W/FLATS. 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.