The Washer,recessed, cataloged under National Stock Number 5310-00-930-4555, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-930-4555 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Heat Treatment | HOT ROLLED AND ANNEALED |
| Style Designator | RECESSED |
| Material Document and Classification | QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN |
| Material Thickness | 0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN |
| Recess Diameter | 0.535 INCHES MINIMUM AND 0.545 INCHES MAXIMUM IN |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN |
| Recess Angle | 118.0 DEGREES MINIMUM AND 122.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| 369923-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-930-4555 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-930-4555: Heat Treatment: HOT ROLLED AND ANNEALED; Style Designator: RECESSED; Material Document and Classification: QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN. 9 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.