The Bearing,ball,annular, cataloged under National Stock Number 3110-01-172-6474, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division. Government technical data includes 13 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-172-6474 |
| Primary Part Number | 178SA188 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Lubrication Material | GREASE |
| Internal Fit-Up Designation | STANDARD |
| Surface Finish | GROUND |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 6.0 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Alignment Type | RIGID |
| Standard Tolerance Designation | ABEC NO.3 |
| Bore Diameter | 2.0 MILLIMETERS NOMINAL MM |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 178SA188 PRIMARY | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division (USA) |
| SMR206K2T3C25GL15 | Fag Bearings Corporation (USA) |
| Reference | Meaning |
|---|---|
| SSR-620HA1P25LG54 | 5/9 Secondary reference Minebea Mitsumi Inc. |
| SSR-620HA1P25LG5 | 5/9 Secondary reference Minebea Mitsumi Inc. |
| SMR206KT3C25GL15 | 5/9 Secondary reference Schaeffler Aerospace Canada Inc Div Fag Aerospace |
| SMR619/2K04T3C25GL15 | 5/1 Secondary reference Schaeffler Aerospace Canada Inc Div Fag Aerospace |
| 10107543 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| SSR-620HA1P25LG54 | 5/1 Secondary reference Minebea Mitsumi Inc. Div Rodend-Fastener Business Unit |
| 178SA188 | 5/9 Secondary reference Eaton Motor Site |
NSN 3110-01-172-6474 is a Bearing,ball,annular, manufactured by Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-172-6474 has 2 manufacturer part numbers on file: 178SA188 (Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division), SMR206K2T3C25GL15 (Fag Bearings Corporation).
Key specifications for 178SA188: Retainer Fabrication Method: PRESSED; Lubrication Material: GREASE; Internal Fit-Up Designation: STANDARD; Surface Finish: GROUND. 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.