The Washer,lock, cataloged under National Stock Number 5310-01-465-7491, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-465-7491 |
| Primary Part Number | WS-9258-158 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.869 INCHES MAXIMUM IN |
| Material Thickness | 0.125 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.502 INCHES MINIMUM AND 0.512 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 |
|---|---|
| WS-9258-158 PRIMARY | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| WS-9258 PC 158 | 5/9 Secondary reference Lake Shore Systems, Inc. |
| WA-9257-8 | 5/9 Secondary reference Lake Shore Systems, Inc. |
| WA-9257 | 5/9 Secondary reference Lake Shore Systems, Inc. |
| WS-9258 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 5310-01-465-7491 is a Washer,lock, manufactured by Lake Shore Systems, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-465-7491 has 1 manufacturer part number on file: WS-9258-158 (Lake Shore Systems, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-465-8415. Verify interchangeability with system specifications before substitution.
Key specifications for WS-9258-158: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.869 INCHES MAXIMUM IN; Material Thickness: 0.125 INCHES NOMINAL IN; Special Features: GALVANIZED STEEL. 5 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.