The Washer,seal, cataloged under National Stock Number 5310-01-435-1751, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-435-1751 |
| Primary Part Number | 593-6961270 PC 55 |
| Item Name | Washer,seal |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Style Designator | CONCAVE |
| Outside Diameter | 0.620 INCHES NOMINAL0.620 INCHES NOMINAL IN |
| Material | RUBBER NEOPRENE SEALING ELEMENT |
| Material | STEEL COMP 303 AND STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303CU OR STEEL COMP 303 PLUS X OR STEEL COMP 304 OR STEEL COMP 304H OR STEEL COMP 304L OVERALL |
| 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 |
|---|---|
| 593-6961270 PC 55 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-435-1751 is a Washer,seal, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-435-1751 has 1 manufacturer part number on file: 593-6961270 PC 55 (Naval Sea Systems Command).
Key specifications for 593-6961270 PC 55: Style Designator: CONCAVE; Outside Diameter: 0.620 INCHES NOMINAL0.620 INCHES NOMINAL IN; Material: RUBBER NEOPRENE SEALING ELEMENT; Material: STEEL COMP 303 AND STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303CU OR STEEL COMP 303 PLUS X OR STEEL COMP 304 OR STEEL COMP 304H OR STEEL COMP 304L OVERALL. 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.