The Washer,key, cataloged under National Stock Number 5310-01-386-2585, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Gst Industries Inc.. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 5310-01-386-2585 |
| Primary Part Number | 81384 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Gst Industries Inc. |
| Status | ACTIVE |
| Second Key Width | 0.125 INCHES MINIMUM AND 0.129 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.660 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-A-250/8 FED SPEC 1ST MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| First Key Width | 0.1255 INCHES MINIMUM AND 0.1295 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 5052 OVERALL |
| Hole Diameter | 0.187 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 81384 PRIMARY | Gst Industries Inc. (USA) |
NSN 5310-01-386-2585 is a Washer,key, manufactured by Gst Industries Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-386-2585 has 1 manufacturer part number on file: 81384 (Gst Industries Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6615-01-647-6888. Verify interchangeability with system specifications before substitution.
Key specifications for 81384: Second Key Width: 0.125 INCHES MINIMUM AND 0.129 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.660 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: QQ-A-250/8 FED SPEC 1ST MATERIAL RESPONSE OVERALL. 8 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.