The Washer,lock, cataloged under National Stock Number 5310-01-076-7221, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-076-7221 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.253 INCHES MAXIMUM0.253 INCHES MAXIMUM IN |
| Material Thickness | 0.031 INCHES MINIMUM AND 0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM0.037 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OVERALL |
| Hole Diameter | 0.141 INCHES MINIMUM AND 0.141 INCHES MINIMUM AND 0.148 INCHES MAXIMUM0.148 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 |
|---|---|
| 8040-1800 | C/1 Advisory reference — outside the item-of-supply concept Iet Labs Inc |
| 8040-1800 | 3/9 Design control — primary reference Genrad Inc |
| 8040-1800 | C/1 Advisory reference — outside the item-of-supply concept Technipower Llc Dba Unipower |
NSN 5310-01-076-7221 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-076-7221: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.253 INCHES MAXIMUM0.253 INCHES MAXIMUM IN; Material Thickness: 0.031 INCHES MINIMUM AND 0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM0.037 INCHES MAXIMUM IN; Material: STEEL COMP 302 OVERALL. 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.