The Washer,key, cataloged under National Stock Number 5310-00-987-7805, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lexair Inc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-987-7805 |
| Primary Part Number | P80425 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lexair Inc |
| Status | ACTIVE |
| Internal Straight Key Width | 0.172 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 0.531 INCHES NOMINAL IN |
| Overall Distance Including Keys | 1.859 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 1.594 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| External Straight Key Width | 0.156 INCHES NOMINAL IN |
| External Key Quantity | 15 |
| Material | STEEL OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 1.234 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 |
|---|---|
| X5008/12/156 ITEM 72 | Wellman Group (GBR) |
| X5008/12/156/72 | Wellman Group (GBR) |
| 156/72 | Wellman Group (GBR) |
| 156 ITEM 72 | Wellman Group (GBR) |
| P80425 PRIMARY | Lexair Inc (USA) |
| Reference | Meaning |
|---|---|
| P80425 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-987-7805 is a Washer,key, manufactured by Lexair Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-987-7805 has 5 manufacturer part numbers on file: X5008/12/156 ITEM 72 (Wellman Group), X5008/12/156/72 (Wellman Group), 156/72 (Wellman Group), 156 ITEM 72 (Wellman Group), P80425 (Lexair Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-026-2581, 2540-01-602-8747. Verify interchangeability with system specifications before substitution.
Key specifications for P80425: Internal Straight Key Width: 0.172 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 0.531 INCHES NOMINAL IN; Overall Distance Including Keys: 1.859 INCHES NOMINAL IN; Style Designator: KEY. 11 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.