The Washer,key, cataloged under National Stock Number 5310-01-266-7811, 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 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-266-7811 |
| Primary Part Number | 74A410701-2007 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Internal Straight Key Width | 0.230 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS5520 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.620 INCHES MINIMUM AND 2.640 INCHES MAXIMUM IN |
| Material Thickness | 0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Material | STEEL COMP 632 OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 1.876 INCHES MINIMUM AND 1.891 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 |
|---|---|
| 74A410701-2007 | Perfekta Inc (USA) |
| 74A410701-2007 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A410701-2007 | Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc (USA) |
| Reference | Meaning |
|---|---|
| 74A410701-2007 | C/1 Advisory reference — outside the item-of-supply concept Steelville Manufacturing Co |
| 74A410701-2007 | C/1 Advisory reference — outside the item-of-supply concept Goodrich Corporation Div Advanced Structures Landing Systems |
| 10110247 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-01-266-7811 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-266-7811 has 3 manufacturer part numbers on file: 74A410701-2007 (Perfekta Inc), 74A410701-2007 (The Boeing Company Div Defense), 74A410701-2007 (Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc).
Key specifications for 74A410701-2007: Internal Straight Key Width: 0.230 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: AMS5520 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.