The Washer,shouldered, cataloged under National Stock Number 5310-00-445-8399, 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9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-445-8399 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Shoulder Height | 0.270 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | MIL-S-5000 COND F2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.750 INCHES NOMINAL IN |
| Material Thickness | 0.076 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.5015 INCHES MINIMUM AND 1.5025 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP E4340 OVERALL |
| Hole Diameter | 1.250 INCHES MINIMUM AND 1.251 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 |
|---|---|
| 1560AC1-042 | 3/2 Design control — primary reference U.S. Government activity |
| C4WM1060-1 | 5/9 Secondary reference De Havilland Aircraft of Canada Limited |
NSN 5310-00-445-8399 is a Washer,shouldered, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-445-8399: Shoulder Height: 0.270 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN; Style Designator: SHOULDERED; Material Document and Classification: MIL-S-5000 COND F2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.750 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.