The Washer,key, cataloged under National Stock Number 5310-01-077-1769, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Flowserve Corporation Dba Flowserve Div Services Business Unit. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-077-1769 |
| Primary Part Number | 2546X |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Flowserve Corporation Dba Flowserve Div Services Business Unit |
| Status | ACTIVE |
| Overall Distance Including Keys | 1.625 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 0.938 INCHES NOMINAL IN |
| Material Thickness | 0.032 INCHES NOMINAL IN |
| External Straight Key Width | 0.250 INCHES NOMINAL IN |
| External Key Quantity | 8 |
| Material | STEEL COMP 304 OVERALL |
| Hole Diameter | 0.719 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 |
|---|---|
| 2546X PRIMARY | Flowserve Corporation Dba Flowserve Div Services Business Unit (USA) |
| Reference | Meaning |
|---|---|
| 1D2529IT1.6 | 5/9 Secondary reference Flowserve Corporation Dba Flowserve Div Services Business Unit |
NSN 5310-01-077-1769 is a Washer,key, manufactured by Flowserve Corporation Dba Flowserve Div Services Business Unit, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-077-1769 has 1 manufacturer part number on file: 2546X (Flowserve Corporation Dba Flowserve Div Services Business Unit).
Key specifications for 2546X: Overall Distance Including Keys: 1.625 INCHES NOMINAL IN; Style Designator: KEY; Outside Diameter: 0.938 INCHES NOMINAL IN; Material Thickness: 0.032 INCHES NOMINAL IN. 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.