The Washer,lock, cataloged under National Stock Number 5310-01-525-9779, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Kidde Fire Fighting, Inc. Div National Foam. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-525-9779 |
| Primary Part Number | 3234-2028-0 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Kidde Fire Fighting, Inc. Div National Foam |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.583 INCHES MAXIMUM IN |
| Material Thickness | 0.078 INCHES NOMINAL IN |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL |
| Hole Diameter | 0.314 INCHES MINIMUM AND 0.322 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 |
|---|---|
| 3234-2028-0 PRIMARY | Kidde Fire Fighting, Inc. Div National Foam (USA) |
| 93613672 | Kidde Fire Fighting, Inc. Div National Foam (USA) |
NSN 5310-01-525-9779 is a Washer,lock, manufactured by Kidde Fire Fighting, Inc. Div National Foam, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-525-9779 has 2 manufacturer part numbers on file: 3234-2028-0 (Kidde Fire Fighting, Inc. Div National Foam), 93613672 (Kidde Fire Fighting, Inc. Div National Foam).
Key specifications for 3234-2028-0: Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.583 INCHES MAXIMUM IN; Material Thickness: 0.078 INCHES NOMINAL IN. 6 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.