The Washer,lock, cataloged under National Stock Number 5310-01-135-3559, 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 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-135-3559 |
| Primary Part Number | 585-6406777-137 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.365 INCHES NOMINAL IN |
| Material Thickness | 0.078 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | G CLASS |
| Material | NICKEL ALLOY AND COPPER ALLOY OVERALL |
| Hole Diameter | 0.254 INCHES MINIMUM AND 0.262 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 |
|---|---|
| 585-6406777-137 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| FFW84 CL-G STY- 5 .25O NOM NICU | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| FF-W-84 | 4/1 Identification reference U.S. Government activity |
| 413-4491193 PIECE 50 | 5/9 Secondary reference Naval Ship Engineering Center Philadelphia Division Submarine Antenna Quality Assurance |
NSN 5310-01-135-3559 is a Washer,lock, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-135-3559 has 1 manufacturer part number on file: 585-6406777-137 (Naval Sea Systems Command).
Key specifications for 585-6406777-137: Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.365 INCHES NOMINAL IN; Material Thickness: 0.078 INCHES NOMINAL IN. 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.