The Washer,flat, cataloged under National Stock Number 5310-01-475-0375, 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 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-475-0375 |
| Primary Part Number | 5563779 PC 13 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ZINC SEALING ELEMENT |
| Peripheral Shape Style | ROUND |
| Center Hole Shape Style | ROUND |
| 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 |
|---|---|
| 6602828 PC 19 | Naval Sea Systems Command (USA) |
| 5563779 PC 13 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 124-5563777 PC | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 124-6602828 PC 19 | 5/9 Secondary reference Naval Sea Systems Command |
| 124-5563779 PC 13 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 5310-01-475-0375 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-475-0375 has 2 manufacturer part numbers on file: 6602828 PC 19 (Naval Sea Systems Command), 5563779 PC 13 (Naval Sea Systems Command).
Key specifications for 5563779 PC 13: Cross-Sectional Shape Style: RECTANGULAR; Special Features: BRONZE; Surface Treatment: ZINC SEALING ELEMENT; Peripheral Shape Style: ROUND. 4 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.