The Washer,recessed, cataloged under National Stock Number 5310-00-596-4681, 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9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-596-4681 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Heat Treatment | T-4 SOLUTION HEAT TREATED, NATURAL AGED |
| Style Designator | RECESSED |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.840 INCHES NOMINAL IN |
| Recess Depth | 0.1317 INCHES MINIMUM AND 0.1461 INCHES MAXIMUM IN |
| Material Thickness | 0.189 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Recess Diameter | 1.700 INCHES MINIMUM AND 1.730 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Hole Diameter | 1.4366 INCHES MINIMUM AND 1.4377 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 |
|---|---|
| 762019 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-596-4681 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-596-4681: Heat Treatment: T-4 SOLUTION HEAT TREATED, NATURAL AGED; Style Designator: RECESSED; Material Document and Classification: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.840 INCHES NOMINAL 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.