The Washer,key, cataloged under National Stock Number 5310-00-157-5590, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-157-5590 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-P-18317 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Centerline to Inside of Prebent Key | 0.177 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.511 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Material Thickness | 0.020 INCHES NOMINAL IN |
| Tapered Key Minor Width | 0.093 INCHES NOMINAL IN |
| External Straight Key Width | 0.090 INCHES MINIMUM IN |
| External Key Quantity | 8 |
| Surface Treatment | NICKEL OVERALL |
| Material | COPPER ALLOY OVERALL |
| Internal Key Quantity | 21 |
| Tapered Key Major Width | 0.125 INCHES NOMINAL IN |
| Hole Diameter | 0.158 INCHES MINIMUM AND 0.163 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 |
|---|---|
| MS17186-6 | 2/2 Government specification standardization U.S. Government activity |
| 5310PL0802063 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-00-157-5590 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-157-5590: Surface Treatment Document and Classification: MIL-P-18317 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Distance From Centerline to Inside of Prebent Key: 0.177 INCHES NOMINAL IN; Overall Distance Including Keys: 0.511 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN; Material Document and Classification: QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 14 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.