The Bearing,ball,annular, cataloged under National Stock Number 3110-01-142-1570, 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 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-142-1570 |
| Primary Part Number | SR4FRHH7P28LY244 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Lubrication Material | OIL |
| Internal Clearance | 0.0002 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN |
| Flange Outside Diameter | 0.6900 INCHES NOMINAL IN |
| Surface Finish | GROUND |
| Shield Quantity | 2 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Material Document and Classification | QQ-S-763,CLASS 300,COND A FED SPEC SINGLE MATERIAL RESPONSE SHIELD |
| Material Document and Classification | QQ-S-763,COND A FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763,CLASS 300,COOND A FED SPEC 2ND MATERIAL RESPONSE RETAINER |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE BALL |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE INNER RING |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OUTER RING |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Flange Width | 0.0420 INCHES NOMINAL IN |
| Outer Ring Outside Diameter | 0.6250 INCHES NOMINAL IN |
| Standard Tolerance Designation | ABEC NO. 7P |
| Bore Diameter | 0.2500 INCHES NOMINAL IN |
| Material | STEEL COMP 440C INNER RING |
| Material | STEEL COMP 440C OUTER RING |
| Material | STEEL COMP 440C BALL |
| Material | STEEL CORROSION RESISTING SHIELD |
| Material | STEEL COMP 430 OR STEEL CORROSION RESISTING RETAINER |
| Lubrication Material Document and Classification | MIL-L-7808 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 |
|---|---|
| SR4FRHH7P28LY244 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| USCD-10129-1 | 7/9 Vendor item drawing reference Boeing Company, the |
| USCD-10129-1 | 5/9 Secondary reference The Boeing Company Div Legacy Corinth Bgrc |
NSN 3110-01-142-1570 is a Bearing,ball,annular, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-142-1570 has 1 manufacturer part number on file: SR4FRHH7P28LY244 (Mpb Corp Div Timken Super Precision).
Key specifications for SR4FRHH7P28LY244: Retainer Fabrication Method: PRESSED; Lubrication Material: OIL; Internal Clearance: 0.0002 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN; Flange Outside Diameter: 0.6900 INCHES NOMINAL IN. 24 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.