The Washer,shouldered, cataloged under National Stock Number 5310-01-121-9396, 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 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-121-9396 |
| Primary Part Number | 74A410660-2001 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES TOP |
| Surface Finish | 32.0 MICROINCHES COUNTERBORE WALL |
| Shoulder Height | 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | AMS 4640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.250 INCHES NOMINAL IN |
| Material Thickness | 0.059 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.127 INCHES MINIMUM AND 1.128 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 630 OVERALL |
| Hole Diameter | 0.990 INCHES MINIMUM AND 0.992 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 |
|---|---|
| 74A410660-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10109390 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A410660-2001 | C/1 Advisory reference — outside the item-of-supply concept Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 5310-01-121-9396 is a Washer,shouldered, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-121-9396 has 1 manufacturer part number on file: 74A410660-2001 (The Boeing Company Div Defense).
Key specifications for 74A410660-2001: Surface Finish: 63.0 MICROINCHES TOP; Surface Finish: 32.0 MICROINCHES COUNTERBORE WALL; Shoulder Height: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN; Style Designator: SHOULDERED. 10 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.