The Washer,key, cataloged under National Stock Number 5310-01-251-8335, 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 | 5310-01-251-8335 |
| Primary Part Number | 68A410656-2003 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Internal Straight Key Width | 0.013 INCHES NOMINAL0.013 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 0.251 INCHES NOMINAL0.251 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.060 INCHES NOMINAL1.060 INCHES NOMINAL IN |
| Material Thickness | 0.157 INCHES NOMINAL0.157 INCHES NOMINAL IN |
| Material | STEEL COMP 630 OVERALL |
| Internal Key Quantity | 22 |
| Hole Diameter | 0.695 INCHES NOMINAL0.695 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 |
|---|---|
| 68A410656-2003 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-01-251-8335 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-251-8335 has 1 manufacturer part number on file: 68A410656-2003 (The Boeing Company Div Defense).
Key specifications for 68A410656-2003: Internal Straight Key Width: 0.013 INCHES NOMINAL0.013 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 0.251 INCHES NOMINAL0.251 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: AMS5643 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.