The Bearing,washer,thrust, cataloged under National Stock Number 3120-00-366-2929, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-366-2929 |
| Primary Part Number | 8166495 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc |
| Status | ACTIVE |
| Surface Finish | 25.0 MICROINCHES OVERALL |
| Corner Shape | SQUARE ALL CORNERS |
| Overall Thickness | 0.3650 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 4.4900 INCHES MINIMUM AND 4.5000 INCHES MAXIMUM IN |
| Center Hole Keyway Quantity | 4 |
| Center Hole Keyway Radius | 0.2500 INCHES NOMINAL IN |
| Minor Diameter | 3.0040 INCHES NOMINAL IN |
| Material | LUBRICANT LUBRICATION |
| Material | IRON CAST OVERALL |
| Major Diameter | 4.0000 INCHES NOMINAL IN |
| Center Hole Shape Style | ROUND W/ROUND KEYWAYS |
| 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 |
|---|---|
| 8166495 PRIMARY | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc (USA) |
| Reference | Meaning |
|---|---|
| 8166495 | 3/9 Design control — primary reference General Motors Corp Electro-Motive Div |
| 8166495 | 5/9 Secondary reference General Motors Corp |
NSN 3120-00-366-2929 is a Bearing,washer,thrust, manufactured by Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-366-2929 has 1 manufacturer part number on file: 8166495 (Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc).
Key specifications for 8166495: Surface Finish: 25.0 MICROINCHES OVERALL; Corner Shape: SQUARE ALL CORNERS; Overall Thickness: 0.3650 INCHES NOMINAL IN; Style Designator: ROUND. 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.