The Bearing,ball,annular, cataloged under National Stock Number 3110-00-278-7002, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-278-7002 |
| Primary Part Number | 0523-4 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Retainer Fabrication Method | COILED |
| Lubrication Material | OIL |
| Internal Clearance | 0.0003 INCHES MINIMUM RADIAL AND 0.0006 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Shield Quantity | 2 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 0.8750 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.7 |
| Bore Diameter | 0.3750 INCHES NOMINAL IN |
| Material | STEEL COMP E52100 BALL |
| Material | STEEL CORROSION RESISTING RETAINER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Material | STEEL CORROSION RESISTING SHIELD |
| 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 |
|---|---|
| 0523-4 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| R6SSZ4VL011 | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA) |
| Reference | Meaning |
|---|---|
| R6SSZ4VL | 5/9 Secondary reference Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation |
| RS77SR6DDZE7366J | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
| RS77SR6DDZE7366J | 5/9 Secondary reference General Motors Corp |
NSN 3110-00-278-7002 is a Bearing,ball,annular, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-278-7002 has 2 manufacturer part numbers on file: 0523-4 (Lockheed Martin Corporation Div Rms - Mitchel Field), R6SSZ4VL011 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation).
Key specifications for 0523-4: Retainer Fabrication Method: COILED; Lubrication Material: OIL; Internal Clearance: 0.0003 INCHES MINIMUM RADIAL AND 0.0006 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND. 17 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.