The Washer,convex, cataloged under National Stock Number 5310-01-303-0318, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-303-0318 |
| Item Name | Washer,convex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.725 INCHES NOMINAL IN |
| Material | STEEL COMP 321 OVERALL |
| Hole Diameter | 0.313 INCHES MINIMUM AND 0.323 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 |
|---|---|
| 5310PL0787115 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 16F0118-11 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-303-0318 is a Washer,convex, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-303-0318: Material Document and Classification: QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.725 INCHES NOMINAL IN; Special Features: HOLE COUNTERSUNK 90 DEGREE ANGLE ON FLAT BEARING SURFACE END; Material: STEEL COMP 321 OVERALL. 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.