The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-00-901-9830, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-901-9830 |
| Primary Part Number | B2769 |
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division |
| Status | ACTIVE |
| Surface Finish | 64.0 MICROINCHES ALL SURFACES |
| Shoulder Height | 0.031 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN |
| Heat Treatment | NORMALIZED |
| Hardness Rating | 44.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM |
| Style Designator | SHOULDERED AND RECESSED |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.618 INCHES MINIMUM AND 3.623 INCHES MAXIMUM IN |
| Material Thickness | 0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM IN |
| Shoulder Diameter | 2.774 INCHES MINIMUM AND 2.777 INCHES MAXIMUM IN |
| Material | STEEL COMP E4340 OVERALL |
| Hole Diameter | 2.678 INCHES MINIMUM AND 2.698 INCHES MAXIMUM IN |
| Recess Angle | 90.0 DEGREES NOMINAL |
| 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 |
|---|---|
| B2769 PRIMARY | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division (USA) |
| Reference | Meaning |
|---|---|
| B2769 | 5/9 Secondary reference Eaton Motor Site |
NSN 5310-00-901-9830 is a Washer,shouldered and Recessed, manufactured by Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-901-9830 has 1 manufacturer part number on file: B2769 (Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division).
Key specifications for B2769: Surface Finish: 64.0 MICROINCHES ALL SURFACES; Shoulder Height: 0.031 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN; Heat Treatment: NORMALIZED; Hardness Rating: 44.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM. 12 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.