The Washer,shouldered, cataloged under National Stock Number 5310-01-508-1271, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-508-1271 |
| Primary Part Number | 6393054-1 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Shoulder Height | 0.138 INCHES NOMINAL IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | ASTM D4181, POM 211 ASSN STD 1ST MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.562 INCHES NOMINAL IN |
| Shoulder Diameter | 0.286 INCHES NOMINAL IN |
| Material | PLASTIC ACETAL OVERALL |
| Hole Diameter | 0.279 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 |
NSN 5310-01-508-1271 is a Washer,shouldered, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-508-1271 has 2 manufacturer part numbers on file: 6393054-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 6393054-1 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-508-9433. Verify interchangeability with system specifications before substitution.
Key specifications for 6393054-1: Overall Height: 0.250 INCHES NOMINAL IN; Shoulder Height: 0.138 INCHES NOMINAL IN; Style Designator: SHOULDERED; Material Document and Classification: ASTM D4181, POM 211 ASSN STD 1ST MATERIAL RESPONSE OVERALL. 7 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.