The Washer,key, cataloged under National Stock Number 5310-00-558-3303, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-558-3303 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-698,TEMPER 4,FINISH 2 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 2.375 INCHES NOMINAL IN |
| Material Thickness | 0.048 INCHES NOMINAL IN |
| External Prebent Key Angle | 75.0 DEGREES MINIMUM AND 90.0 DEGREES MAXIMUM |
| Surface Treatment | CADMIUM OVERALL |
| External Prebent Key Width | 0.242 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN |
| Material | STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL |
| Hole Diameter | 1.692 INCHES MINIMUM AND 1.697 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 |
|---|---|
| 55A82B4 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 55A82A4 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 55A82A4 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-558-3303 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-558-3303: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: KEY; Material Document and Classification: QQ-S-698,TEMPER 4,FINISH 2 FED SPEC ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 2.375 INCHES NOMINAL IN. 10 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.