The Bearing,ball,duplex, cataloged under National Stock Number 3110-00-232-7979, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Kaydon Corporation Dba Kaydon Corp. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-232-7979 |
| Primary Part Number | 50219-201 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Kaydon Corporation Dba Kaydon Corp |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Bearing Seal Type | CONTACT |
| Surface Treatment Document and Classification | MIL-V-173 MIL SPEC SINGLE TREATMENT RESPONSE RETAINER |
| Surface Treatment Document and Classification | MIL-V-173 MIL SPEC SINGLE TREATMENT RESPONSE SEAL |
| Internal Fit-Up Designation | STANDARD |
| Surface Finish | GROUND |
| Style Designator | COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING |
| Material Document and Classification | UNABLE TO DECODE |
| Overall Outside Diameter | 4.6247 INCHES MINIMUM AND 4.6250 INCHES MAXIMUM IN |
| Contact Angle | 30.0 DEGREES NOMINAL |
| Load Direction | ANGULAR |
| Surface Treatment | VARNISH RETAINER |
| Surface Treatment | VARNISH SEAL |
| Seal Quantity | 2 |
| Test Data Document | 32828-63-44-24-1-2 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Bore Diameter | 3.9997 INCHES MINIMUM AND 4.0000 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 BALL |
| Material | GREASE LUBRICATION |
| Material | PLASTIC PHENOLIC RETAINER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND PLASTIC PHENOLIC SEAL |
| Lubrication Material Document and Classification | MIL-G-23827 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 |
|---|---|
| 50219-201 | Kaydon Corporation Dba Kaydon Corp (USA) |
| FI040BH4Z050219 | Kaydon Corporation Dba Kaydon Corp (USA) |
| FI040BH5Z050219 | Kaydon Corporation Dba Kaydon Corp (USA) |
| Reference | Meaning |
|---|---|
| 203-036-0002 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3110-00-232-7979 is a Bearing,ball,duplex, manufactured by Kaydon Corporation Dba Kaydon Corp, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-232-7979 has 3 manufacturer part numbers on file: 50219-201 (Kaydon Corporation Dba Kaydon Corp), FI040BH4Z050219 (Kaydon Corporation Dba Kaydon Corp), FI040BH5Z050219 (Kaydon Corporation Dba Kaydon Corp).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-113-4088. Verify interchangeability with system specifications before substitution.
Key specifications for 50219-201: Retainer Fabrication Method: MACHINED; Bearing Seal Type: CONTACT; Surface Treatment Document and Classification: MIL-V-173 MIL SPEC SINGLE TREATMENT RESPONSE RETAINER; Surface Treatment Document and Classification: MIL-V-173 MIL SPEC SINGLE TREATMENT RESPONSE SEAL. 23 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.