The Bearing,washer,thrust, cataloged under National Stock Number 3120-01-280-6933, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 28 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 | 3120-01-280-6933 |
| Primary Part Number | 61350-24074-101 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Finish | 20.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Corner Shape | SQUARE SECOND OUTSIDE CORNER |
| Corner Shape | SQUARE FOURTH OUTSIDE CORNER |
| Corner Shape | SQUARE FIRST OUTSIDE CORNER |
| Corner Shape | CHAMFERED FIRST INSIDE CORNER |
| Corner Shape | SQUARE SECOND INSIDE CORNER |
| Corner Shape | ROUND THIRD OUTSIDE CORNER |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE DIAMETER SURFACE OF BODY |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE LARGEST OUTSIDE DIAMETER |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE RIGHT SIDE |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE RIGHT SIDE OF FLANGE |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE SMALLEST OUTSIDE DIAMETER |
| Flange Thickness | 0.0620 INCHES MINIMUM AND 0.0720 INCHES MAXIMUM IN |
| Overall Thickness | 0.2680 INCHES MINIMUM AND 0.2700 INCHES MAXIMUM IN |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | ROUND |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 2.2525 INCHES MINIMUM AND 2.2530 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | SHOULDERED |
| Outside Diameter | 2.9850 INCHES NOMINAL IN |
| Shank Outside Diameter | 2.5160 INCHES NOMINAL IN |
| Surface Treatment | OXIDE INSIDE DIAMETER SURFACE OF BODY |
| Surface Treatment | OXIDE LARGEST OUTSIDE DIAMETER |
| Surface Treatment | OXIDE RIGHT SIDE |
| Surface Treatment | OXIDE RIGHT SIDE OF FLANGE |
| Surface Treatment | OXIDE SMALLEST OUTSIDE DIAMETER |
| Material | STEEL COMP E4340 OVERALL |
| Center Hole Shape Style | ROUND |
| 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 |
|---|---|
| 61350-24074-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 3120-01-280-6933 is a Bearing,washer,thrust, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-280-6933 has 1 manufacturer part number on file: 61350-24074-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 61350-24074-101: Surface Finish: 20.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Corner Shape: SQUARE SECOND OUTSIDE CORNER; Corner Shape: SQUARE FOURTH OUTSIDE CORNER; Corner Shape: SQUARE FIRST OUTSIDE CORNER. 28 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.