The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-030-4194, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation. Government technical data includes 19 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-030-4194 |
| Primary Part Number | 21006204-101 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation |
| Status | ACTIVE |
| Retainer Fabrication Method | MOLDED |
| Bearing Preload Rating | 20.0 POUNDS NOMINAL LBS |
| Internal Fit-Up Designation | STANDARD |
| Surface Finish | GROUND |
| Bearing Preload Designation | MEDIUM |
| Shield Quantity | 2 |
| Style Designator | COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING |
| Material Document and Classification | UNABLE TO DECODE |
| Overall Outside Diameter | 2.8750 INCHES NOMINAL IN |
| Load Direction | RADIAL |
| Seal Quantity | 4 |
| Standard Tolerance Designation | ABEC NO. 7P |
| Bore Diameter | 2.3125 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEPARATOR |
| Material | LUBRICANT LUBRICATION |
| Material | STEEL COMP 440C BALL |
| Material | STEEL CORROSION RESISTING SHIELD |
| Material | STEEL COMP 440C INNER RACE |
| Material | STEEL COMP 440C OUTER RACE |
| 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 |
|---|---|
| 21006204-101 PRIMARY | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA) |
| Reference | Meaning |
|---|---|
| AMVW546PPTSDB | 5/9 Secondary reference Timken Co Div the Timken Company |
| SR546L6T8C2-1 | 5/9 Secondary reference U.S. Government activity |
| 21006204-101 | 1/2 Source control — Government-approved source U.S. Government activity |
| 21006204 | D/9 Drawing number reference only U.S. Government activity |
| SP546PT8C2-1 | 5/9 Secondary reference U.S. Government activity |
| SW546YZAX4K5DB22-1/2 | 5/1 Secondary reference Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation |
| 21006204-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3110-01-030-4194 is a Bearing,ball,duplex, manufactured by Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-030-4194 has 1 manufacturer part number on file: 21006204-101 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation).
1 possible match (shared part number, not a government interchangeability claim): 4210-01-507-8609. Verify interchangeability with system specifications before substitution.
Key specifications for 21006204-101: Retainer Fabrication Method: MOLDED; Bearing Preload Rating: 20.0 POUNDS NOMINAL LBS; Internal Fit-Up Designation: STANDARD; Surface Finish: GROUND. 19 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.