The Washer,key, cataloged under National Stock Number 5310-00-331-9302, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-331-9302 |
| Primary Part Number | 9M103-8 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Wire Hole Diameter | 0.065 INCHES NOMINAL IN |
| Internal Prebent Key Width | 0.094 INCHES NOMINAL IN |
| Style Designator | INTERNAL PREBENT KEY |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.750 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN |
| Material Thickness | 0.035 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 4130 OVERALL |
| Hole Diameter | 0.506 INCHES MINIMUM AND 0.516 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 |
|---|---|
| 9M103-8 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-00-331-9302 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-331-9302 has 1 manufacturer part number on file: 9M103-8 (The Boeing Company Div Defense).
Key specifications for 9M103-8: Wire Hole Diameter: 0.065 INCHES NOMINAL IN; Internal Prebent Key Width: 0.094 INCHES NOMINAL IN; Style Designator: INTERNAL PREBENT KEY; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 9 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.