The Washer,flat, cataloged under National Stock Number 5310-01-133-9480, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-133-9480 |
| Primary Part Number | 5169250-204 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-83286 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 2.250 INCHES NOMINAL IN |
| Heat Treatment | H-34 STRAIN HARDENED, STABILIZED TO 1/2 HARD |
| Material Document and Classification | QQ-A-250/8,H34 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | GRAY/GREY OVERALL |
| Surface Treatment | PAINT OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 5052 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.281 INCHES NOMINAL IN |
| Thickness | 0.032 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 |
|---|---|
| 5169250-204 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5169250-201 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-133-9480 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-133-9480 has 1 manufacturer part number on file: 5169250-204 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-484-1391. Verify interchangeability with system specifications before substitution.
Key specifications for 5169250-204: Surface Treatment Document and Classification: MIL-C-83286 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 2.250 INCHES NOMINAL IN; Heat Treatment: H-34 STRAIN HARDENED, STABILIZED TO 1/2 HARD; Material Document and Classification: QQ-A-250/8,H34 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 12 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.