The Washer,key, cataloged under National Stock Number 5310-00-727-8987, 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13 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-727-8987 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 2.470 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.062 INCHES MINIMUM AND 2.082 INCHES MAXIMUM IN |
| Material Thickness | 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| External Key Quantity | 17 |
| Internal Prebent Key Length | 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE OVERALL |
| External Prebent Key Width | 0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 OVERALL |
| Hole Diameter | 1.792 INCHES MINIMUM AND 1.817 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 |
|---|---|
| MS172210 | 5/9 Secondary reference U.S. Government activity |
| SAE AS17220THRUAS172234 | 4/1 Identification reference U.S. Government activity |
| MS172210 | 2/2 Government specification standardization U.S. Government activity |
| MS172210 | 5/1 Secondary reference Sae International Dba Sae International |
NSN 5310-00-727-8987 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-727-8987: Surface Treatment Document and Classification: AMS 2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN; Overall Distance Including Keys: 2.470 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN; Style Designator: KEY. 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.