The Bearing,ball,annular, cataloged under National Stock Number 3110-00-044-3478, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Timken Co Div the Timken Company. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3110-00-044-3478 |
| Primary Part Number | MM212-6MBRE7153 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Timken Co Div the Timken Company |
| Status | ACTIVE |
| Internal Clearance | 0.0180 INCHES MINIMUM AXIAL AND 0.0210 INCHES MAXIMUM AXIAL IN |
| Surface Finish | GROUND |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 110.00 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Contact Angle | 30.0 DEGREES NOMINAL |
| Load Direction | ANGULAR |
| Standard Tolerance Designation | ABEC NO.5 |
| Bore Diameter | 60.00 MILLIMETERS NOMINAL MM |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | COPPER ALLOY RETAINER |
| Material | STEEL BALL |
| 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 |
|---|---|
| SB1353-1 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| MM212-6MBRE7153 PRIMARY | Timken Co Div the Timken Company (USA) |
| 9212U9 PRIMARY | Skf Usa Inc. (USA) |
| 451742 PRIMARY | Skf Usa Inc. (USA) |
| Reference | Meaning |
|---|---|
| 921209A500AD15C18S9036K | 5/9 Secondary reference Skf Usa Inc. |
NSN 3110-00-044-3478 is a Bearing,ball,annular, manufactured by Timken Co Div the Timken Company, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-044-3478 has 4 manufacturer part numbers on file: SB1353-1 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), MM212-6MBRE7153 (Timken Co Div the Timken Company), 9212U9 (Skf Usa Inc.), 451742 (Skf Usa Inc.).
Key specifications for MM212-6MBRE7153: Internal Clearance: 0.0180 INCHES MINIMUM AXIAL AND 0.0210 INCHES MAXIMUM AXIAL IN; Surface Finish: GROUND; Style Designator: NON-LOADING GROOVE, NON-SEPARABLE; Overall Width: 22.0 MILLIMETERS NOMINAL MM. 13 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.