The Washer,flat, cataloged under National Stock Number 5310-01-515-0579, 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 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-515-0579 |
| Primary Part Number | 6390668-02 FIND 41 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS2483,TYPE 2;COLOR DEEP BLUE ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-T-9046,CLASS CP-1 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS4901 (80 KSI MIN UTS) ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | BLUE OVERALL |
| Surface Treatment | ANODIZE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | TITANIUM UNS R50700 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.557 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN |
| Thickness | 0.063 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 |
|---|---|
| 6390668-02 FIND 41 | Naval Sea Systems Command (USA) |
| 6390668-01 FIND 41 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| NAS1149T0563L | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-515-0579 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-515-0579 has 2 manufacturer part numbers on file: 6390668-02 FIND 41 (Naval Sea Systems Command), 6390668-01 FIND 41 (Naval Sea Systems Command).
Key specifications for 6390668-02 FIND 41: Surface Treatment Document and Classification: AMS2483,TYPE 2;COLOR DEEP BLUE ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN; Material Document and Classification: MIL-T-9046,CLASS CP-1 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS4901 (80 KSI MIN UTS) ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 11 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.