The Washer,key, cataloged under National Stock Number 5310-00-595-7627, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-595-7627 |
| Primary Part Number | 2280 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.098 INCHES NOMINAL IN |
| Internal Prebent Key Width | 0.084 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 0.438 INCHES NOMINAL IN |
| Material Thickness | 0.016 INCHES NOMINAL IN |
| Internal Prebent Key Length | 0.109 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.128 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 |
|---|---|
| 2280 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 2280 | 5/9 Secondary reference Donallco Inc |
NSN 5310-00-595-7627 is a Washer,key, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-595-7627 has 1 manufacturer part number on file: 2280 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 2280: Distance From Centerline to Inside of Prebent Key: 0.098 INCHES NOMINAL IN; Internal Prebent Key Width: 0.084 INCHES NOMINAL IN; Style Designator: KEY; Outside Diameter: 0.438 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.