The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-013-4041, 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 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-013-4041 |
| Primary Part Number | 901811-2C |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Retainer Fabrication Method | STAMPED |
| Bearing Preload Rating | 4.0 POUNDS NOMINAL LBS |
| Internal Clearance | 0.0003 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Shield Quantity | 1 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE, TANDEM MOUNTING |
| Overall Outside Diameter | 0.3750 INCHES NOMINAL IN |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO. 5P |
| Bore Diameter | 0.1250 INCHES NOMINAL IN |
| Material | OIL LUBRICATION |
| 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 |
|---|---|
| 901811-2C PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| 901811-2C PRIMARY | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA) |
| SR2-6SW4DB2 1/2-011 | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA) |
| Reference | Meaning |
|---|---|
| SR2-65PK35-1/7 | 5/1 Secondary reference New Hampshire Ball Bearings Inc Div Precision Division |
| SR2-65PK35-1/7 | 5/9 Secondary reference U.S. Government activity |
| S618RH5P35L0-2DB1/4 | 5/1 Secondary reference Mpb Corp Div Timken Super Precision |
| 901811-2C | 3/2 Design control — primary reference U.S. Government activity |
| 901811-2C | 1/2 Source control — Government-approved source U.S. Government activity |
| SR2-6SW4DB2 112- | C/1 Advisory reference — outside the item-of-supply concept Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation |
| S618RH5P35L0-2DB | C/1 Advisory reference — outside the item-of-supply concept Mpb Corp Div Timken Super Precision |
| AV33KD3DB | 5/1 Secondary reference Timken Co Div the Timken Company |
NSN 3110-01-013-4041 is a Bearing,ball,duplex, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-013-4041 has 3 manufacturer part numbers on file: 901811-2C (Mpb Corp Div Timken Super Precision), 901811-2C (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), SR2-6SW4DB2 1/2-011 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation).
Key specifications for 901811-2C: Retainer Fabrication Method: STAMPED; Bearing Preload Rating: 4.0 POUNDS NOMINAL LBS; Internal Clearance: 0.0003 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND. 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.