The Washer,flat, cataloged under National Stock Number 5310-00-655-9478, 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 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-655-9478 |
| Primary Part Number | 8605446-12 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 0.993 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.433 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN |
| Thickness | 0.064 INCHES MINIMUM AND 0.104 INCHES MAXIMUM 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 |
|---|---|
| 8605446-12 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 709-5486672 PC7 | C/1 Advisory reference — outside the item-of-supply concept Huntington Ingalls Inc Div Newport News Shipbuilding |
| MS15795-415 | 5/9 Secondary reference U.S. Government activity |
| NASM15795-415 | 3/2 Design control — primary reference U.S. Government activity |
| MS15795-415 | 5/9 Secondary reference U.S. Government activity |
| 3502219000 | C/1 Advisory reference — outside the item-of-supply concept Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc |
NSN 5310-00-655-9478 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-655-9478 has 1 manufacturer part number on file: 8605446-12 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-291-0202. Verify interchangeability with system specifications before substitution.
Key specifications for 8605446-12: Overall Diameter: 0.993 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN; Material Document and Classification: QQ-N-281,CL A FED SPEC 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.