The Washer,flat, cataloged under National Stock Number 5310-00-449-6505, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Motors Corp. 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-449-6505 |
| Primary Part Number | 836820 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Width Across Flats | 0.688 INCHES NOMINAL IN |
| Material Document and Classification | AISI 1008 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 1010 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | LEAD AND CADMIUM AND ZINC OVERALL |
| Peripheral Shape Style | HEXAGON |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.390 INCHES NOMINAL IN |
| Thickness | 0.062 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 |
|---|---|
| 836820 PRIMARY | General Motors Corp (USA) |
NSN 5310-00-449-6505 is a Washer,flat, manufactured by General Motors Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-449-6505 has 1 manufacturer part number on file: 836820 (General Motors Corp).
1 possible match (shared part number, not a government interchangeability claim): 7530-01-314-5983. Verify interchangeability with system specifications before substitution.
Key specifications for 836820: Width Across Flats: 0.688 INCHES NOMINAL IN; Material Document and Classification: AISI 1008 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 1010 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: LEAD AND CADMIUM AND ZINC OVERALL. 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.