The Bearing,ball,annular, cataloged under National Stock Number 3110-01-019-2487, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Anti-Friction Bearing Mfg Assn Inc the. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-019-2487 |
| Primary Part Number | 55BK32X3B |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Anti-Friction Bearing Mfg Assn Inc the |
| Status | ACTIVE |
| Retainer Fabrication Method | STAMPED |
| Lubrication Material | GREASE |
| Internal Clearance | 0.0009 INCHES MINIMUM RADIAL AND 0.0017 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE BALL |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE INNER RING |
| Overall Outside Diameter | 100.0 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 55.0 MILLIMETERS NOMINAL MM |
| Material | STEEL COMP E52100 BALL |
| Material | STEEL RETAINER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Lubrication Material Document and Classification | DOD-G-24508 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 |
|---|---|
| 55BK32X3B PRIMARY | Anti-Friction Bearing Mfg Assn Inc the (USA) |
| 405850-11N | Reliance Electric Company Dba Reliance & Dodge Brands (USA) |
| Reference | Meaning |
|---|---|
| 405850-11N | 5/9 Secondary reference Reliance Electric |
NSN 3110-01-019-2487 is a Bearing,ball,annular, manufactured by Anti-Friction Bearing Mfg Assn Inc the, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-019-2487 has 2 manufacturer part numbers on file: 55BK32X3B (Anti-Friction Bearing Mfg Assn Inc the), 405850-11N (Reliance Electric Company Dba Reliance & Dodge Brands).
Key specifications for 55BK32X3B: Retainer Fabrication Method: STAMPED; Lubrication Material: GREASE; Internal Clearance: 0.0009 INCHES MINIMUM RADIAL AND 0.0017 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND. 18 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.