The Washer,key, cataloged under National Stock Number 5310-00-033-2333, 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9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-033-2333 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Distance Including Keys | 1.009 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Thickness | 0.245 INCHES NOMINAL IN |
| External Straight Key Width | 0.245 INCHES NOMINAL IN |
| External Key Quantity | 4 |
| External Prebent Key Angle | 30.0 DEGREES NOMINAL |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.328 INCHES MINIMUM AND 0.336 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 |
|---|---|
| 10-25337 | 5/9 Secondary reference Unison Industries Llc |
| 10-25337 | 3/9 Design control — primary reference Teledyne Industries Inc Teledyne Power Systems Div |
| 10-25337 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
NSN 5310-00-033-2333 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5325-01-510-2154. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-033-2333: Overall Distance Including Keys: 1.009 INCHES NOMINAL IN; Style Designator: KEY; Material Thickness: 0.245 INCHES NOMINAL IN; External Straight Key Width: 0.245 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.