The Washer,key, cataloged under National Stock Number 5310-00-370-5461, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-370-5461 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.475 INCHES NOMINAL IN |
| External Prebent Key Length | 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 1.011 INCHES MINIMUM AND 1.073 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN |
| Material Thickness | 0.015 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN |
| External Key Quantity | 2 |
| External Prebent Key Angle | 89.5 DEGREES MINIMUM AND 90.5 DEGREES MAXIMUM |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.109 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Material | STEEL COMP 301 OVERALL |
| Angle Between External Keys | 179.0 DEGREES MINIMUM AND 180.0 DEGREES MAXIMUM |
| Hole Diameter | 0.343 INCHES MINIMUM AND 0.353 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 |
|---|---|
| 1243822 | 3/2 Design control — primary reference U.S. Government activity |
| 1243822 | 5/9 Secondary reference The Boeing Company |
NSN 5310-00-370-5461 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2930-00-865-2324. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-370-5461: Distance From Centerline to Inside of Prebent Key: 0.475 INCHES NOMINAL IN; External Prebent Key Length: 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN; Overall Distance Including Keys: 1.011 INCHES MINIMUM AND 1.073 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 13 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.