The Bearing,ball,duplex, cataloged under National Stock Number 3110-00-975-1589, 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 11 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-975-1589 |
| Primary Part Number | 15557 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Kaydon Corporation Dba Kaydon Corp |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Surface Finish | GROUND |
| Style Designator | COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING |
| Overall Outside Diameter | 6.7500 INCHES NOMINAL IN |
| Load Direction | ANGULAR |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 6.0000 INCHES NOMINAL IN |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | COPPER ALLOY RETAINER |
| Material | STEEL BALL |
| 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 |
|---|---|
| 15557 PRIMARY | Kaydon Corporation Dba Kaydon Corp (USA) |
| Reference | Meaning |
|---|---|
| 8789-1 | 5/9 Secondary reference Kaydon Corporation Dba Kaydon Corp |
| ED15557-1 | 5/9 Secondary reference U.S. Government activity |
| 08789201 | 5/9 Secondary reference Kaydon Corporation Dba Kaydon Corp |
| 15557 | 7/2 Vendor item drawing reference U.S. Government activity |
| 878901 | 5/9 Secondary reference Kaydon Corporation Dba Kaydon Corp |
| 15557-1 | 5/9 Secondary reference U.S. Government activity |
| 15557-1 | 5/9 Secondary reference U.S. Government activity |
NSN 3110-00-975-1589 is a Bearing,ball,duplex, manufactured by Kaydon Corporation Dba Kaydon Corp, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-975-1589 has 1 manufacturer part number on file: 15557 (Kaydon Corporation Dba Kaydon Corp).
6 possible matches (shared part number, not a government interchangeability claim): 5995-01-062-1414, 5945-01-107-5107, 4320-01-278-6197. Verify interchangeability with system specifications before substitution.
Key specifications for 15557: Retainer Fabrication Method: MACHINED; Surface Finish: GROUND; Style Designator: COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING; Overall Width: 0.7500 INCHES NOMINAL IN. 11 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.