The Washer,lock, cataloged under National Stock Number 5310-01-708-1437, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fastenal Company. 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 | 5310-01-708-1437 |
| Primary Part Number | 78053 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastenal Company |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.209 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Closed Inside Diameter | 0.114 INCHES MINIMUM AND 0.120 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 |
|---|---|
| 78053 PRIMARY | Fastenal Company (USA) |
NSN 5310-01-708-1437 is a Washer,lock, manufactured by Fastenal Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-708-1437 has 1 manufacturer part number on file: 78053 (Fastenal Company).
Key specifications for 78053: Overall Height: 0.025 INCHES NOMINAL IN; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.209 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: MEDIUM SPLIT LOCK WASHER. 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.