The Washer,key, cataloged under National Stock Number 5310-00-474-3700, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-474-3700 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Prebent Key Angle | 45.0 DEGREES NOMINAL |
| Overall Distance Including Keys | 1.6885 INCHES MINIMUM AND 1.6910 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.565 INCHES MINIMUM AND 1.570 INCHES MAXIMUM IN |
| Key Base Circle Diameter | 1.281 INCHES NOMINAL IN |
| Material Thickness | 0.025 INCHES NOMINAL IN |
| External Straight Key Width | 0.156 INCHES MAXIMUM IN |
| Internal Prebent Key Length | 0.156 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1010 OVERALL |
| Internal Key Quantity | 15 |
| 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 |
|---|---|
| WA52256 | 3/9 Design control — primary reference Adams Aircraft International Inc |
| WA52256 | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
NSN 5310-00-474-3700 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-474-3700: Internal Prebent Key Angle: 45.0 DEGREES NOMINAL; Overall Distance Including Keys: 1.6885 INCHES MINIMUM AND 1.6910 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 12 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.