The Bearing,ball,annular, cataloged under National Stock Number 3110-00-183-6804, 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 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-183-6804 |
| Primary Part Number | 201HC4X |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Surface Finish | GROUND |
| Style Designator | COUNTERBORED OUTER RING, NON-SEPARABLE |
| Overall Outside Diameter | 32.0 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Contact Angle | 25.0 DEGREES MAXIMUM |
| Load Direction | ANGULAR |
| Bore Diameter | 12.0 MILLIMETERS NOMINAL MM |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | PLASTIC PHENOLIC RETAINER |
| Material | STEEL BALL |
| Calibration Designator | C4X |
| 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 |
|---|---|
| Q20201-5179U | General Motors Llc Dba General Motors Llc (USA) |
| 201HC4X PRIMARY | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA) |
| Q20201N05179 | General Motors Llc Dba General Motors Llc (USA) |
| Q20201-51790 | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| Q20201N05179 | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
| Q20201-51790 | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
| 15948 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| Q20201-51790 | 5/9 Secondary reference General Motors Corp |
| Q20201-5179U | 5/9 Secondary reference General Motors Corp |
| Q20201-5179U | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
| Q20201N05179 | 5/9 Secondary reference General Motors Corp |
| 15948 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
NSN 3110-00-183-6804 is a Bearing,ball,annular, manufactured by Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-183-6804 has 4 manufacturer part numbers on file: Q20201-5179U (General Motors Llc Dba General Motors Llc), 201HC4X (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), Q20201N05179 (General Motors Llc Dba General Motors Llc), Q20201-51790 (General Motors Llc Dba General Motors Llc).
8 possible matches (shared part number, not a government interchangeability claim): 6605-00-452-9017, 5950-00-497-5779, 4320-00-792-8187. Verify interchangeability with system specifications before substitution.
Key specifications for 201HC4X: Retainer Fabrication Method: MACHINED; Surface Finish: GROUND; Style Designator: COUNTERBORED OUTER RING, NON-SEPARABLE; Overall Width: 10.0 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.