The Bearing,roller,self-Aligning, cataloged under National Stock Number 3110-00-321-8802, 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 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-00-321-8802 |
| Primary Part Number | S3927B |
| Item Name | Bearing,roller,self-Aligning |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Timken Co Div the Timken Company |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Bearing Seal Type | CONTACT |
| Internal Clearance | 0.0017 INCHES MINIMUM RADIAL AND 0.0027 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Style Designator | DOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE |
| Overall Outside Diameter | 12.5978 INCHES MINIMUM AND 12.5984 INCHES MAXIMUM IN |
| Seal Quantity | 1 |
| Standard Tolerance Designation | RBEC NO.5 |
| Bore Diameter | 9.4483 INCHES MINIMUM AND 9.4488 INCHES MAXIMUM IN |
| Material | COPPER ALLOY RETAINER |
| Material | STEEL COMP E52100 ROLLER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | PLASTIC POLYAMIDE NYLON SEAL |
| Material | STEEL COMP E52100 INNER RING |
| 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 |
|---|---|
| S3927B PRIMARY | Timken Co Div the Timken Company (USA) |
| 562225 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| 2920413 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| S3927B | 5/9 Secondary reference Timken Aerospace, Inc Dba Torrington Product |
NSN 3110-00-321-8802 is a Bearing,roller,self-Aligning, manufactured by Timken Co Div the Timken Company, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-321-8802 has 2 manufacturer part numbers on file: S3927B (Timken Co Div the Timken Company), 562225 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for S3927B: Retainer Fabrication Method: MACHINED; Bearing Seal Type: CONTACT; Internal Clearance: 0.0017 INCHES MINIMUM RADIAL AND 0.0027 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND. 14 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.