The Washer,key, cataloged under National Stock Number 5310-01-476-7010, 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 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-476-7010 |
| Primary Part Number | 74A400970-2003 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Internal Straight Key Width | 0.250 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 0.980 INCHES NOMINAL IN |
| Overall Distance Including Keys | 2.975 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-8844 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.664 INCHES NOMINAL IN |
| Material Thickness | 0.030 INCHES NOMINAL IN |
| External Straight Key Width | 0.980 INCHES NOMINAL IN |
| External Key Quantity | 9 |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 4340 OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 2.385 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74A400970-2003 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A400970-2003 | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 74A400970-2003 | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
NSN 5310-01-476-7010 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-476-7010 has 2 manufacturer part numbers on file: 74A400970-2003 (The Boeing Company Div Defense), 74A400970-2003 (Goodrich Corporation).
Key specifications for 74A400970-2003: Internal Straight Key Width: 0.250 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 0.980 INCHES NOMINAL IN; Overall Distance Including Keys: 2.975 INCHES NOMINAL IN; Style Designator: KEY. 13 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.
NSN 5310-01-476-7010 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.