The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-181-4128, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Mpb Corp Div Timken Super Precision. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-01-181-4128 |
| Primary Part Number | G471 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Internal Clearance | 0.0017 INCHES NOMINAL RADIAL IN |
| Surface Finish | GROUND |
| Style Designator | COUNTERBORED OUTER RINGS, NON-SEPARABLE, FACE TO FACE MOUNTING |
| Material Document and Classification | UNABLE TO DECODE |
| Overall Outside Diameter | 0.4998 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO. 7P |
| Bore Diameter | 0.1873 INCHES MINIMUM AND 0.1874 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 BALL |
| Material | OIL LUBRICATION |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Material | STEEL COMP 410 RETAINER |
| Lubrication Material Document and Classification | MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE |
| 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 |
|---|---|
| G471 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| 653649-1 PRIMARY | Textron Systems Corporation Dba Textron Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| R3B36C193-2 | 3/2 Design control — primary reference U.S. Government activity |
| 653649-1 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 3110-01-181-4128 is a Bearing,ball,duplex, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-181-4128 has 2 manufacturer part numbers on file: G471 (Mpb Corp Div Timken Super Precision), 653649-1 (Textron Systems Corporation Dba Textron Systems Corp).
Key specifications for G471: Retainer Fabrication Method: MACHINED; Internal Clearance: 0.0017 INCHES NOMINAL RADIAL IN; Surface Finish: GROUND; Style Designator: COUNTERBORED OUTER RINGS, NON-SEPARABLE, FACE TO FACE MOUNTING. 15 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.