The Bearing,ball,duplex, cataloged under National Stock Number 3110-00-156-8034, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-156-8034 |
| Primary Part Number | 228401-4 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Surface Finish | GROUND |
| Bearing Preload Designation | LIGHT |
| Style Designator | COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING |
| Overall Outside Diameter | 72.00 MILLIMETERS NOMINAL MM |
| Load Direction | ANGULAR |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 35.00 MILLIMETERS NOMINAL MM |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 228401-4 PRIMARY | Naval Sea Systems Command (USA) |
| 7207DB PRIMARY | Skf Usa Inc. (USA) |
| Reference | Meaning |
|---|---|
| 228401-4 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 7207DB | 5/9 Secondary reference Schatz Bearing Corporation Dba Schatz Bearing Corp |
NSN 3110-00-156-8034 is a Bearing,ball,duplex, manufactured by Naval Sea Systems Command, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-156-8034 has 2 manufacturer part numbers on file: 228401-4 (Naval Sea Systems Command), 7207DB (Skf Usa Inc.).
Key specifications for 228401-4: Retainer Fabrication Method: PRESSED; Surface Finish: GROUND; Bearing Preload Designation: LIGHT; Style Designator: COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING. 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.