The Washer,key, cataloged under National Stock Number 5310-01-108-5147, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-108-5147 |
| Primary Part Number | 666681-020 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.785 INCHES NOMINAL IN |
| Internal Prebent Key Width | 0.380 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 2.125 INCHES NOMINAL IN |
| Material Thickness | 0.0200 INCHES NOMINAL IN |
| Internal Prebent Key Length | 0.160 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 1.500 INCHES MINIMUM AND 1.520 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 |
| Part Number | Manufacturer |
|---|---|
| 666681-020 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| 666681-020 | Honeywell International Inc Div Aerospace-South Bend (bendix Dr) (USA) |
NSN 5310-01-108-5147 is a Washer,key, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-108-5147 has 2 manufacturer part numbers on file: 666681-020 (Raytheon Company Dba Raytheon Co), 666681-020 (Honeywell International Inc Div Aerospace-South Bend (bendix Dr)).
Key specifications for 666681-020: Distance From Centerline to Inside of Prebent Key: 0.785 INCHES NOMINAL IN; Internal Prebent Key Width: 0.380 INCHES NOMINAL IN; Style Designator: KEY; Outside Diameter: 2.125 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.