The Washer,lock, cataloged under National Stock Number 5310-00-193-7571, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-193-7571 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Style Designator | FLAT EXTERNAL TEETH |
| Outside Diameter | 0.462 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN |
| Material Thickness | 0.024 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OVERALL |
| Hole Diameter | 0.221 INCHES MINIMUM AND 0.231 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 |
| Reference | Meaning |
|---|---|
| 1612 | 5/9 Secondary reference Itw Shakeproof Automotive Products |
| 1612C00 00EDBF | 3/9 Design control — primary reference Itw Shakeproof Automotive Products |
NSN 5310-00-193-7571 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-193-7571: Style Designator: FLAT EXTERNAL TEETH; Outside Diameter: 0.462 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN; Material Thickness: 0.024 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN; Surface Treatment: PASSIVATE OVERALL. 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.