The Housing,bearing Unit, cataloged under National Stock Number 3130-00-400-6844, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-00-400-6844 |
| Primary Part Number | 8253250 |
| Item Name | Housing,bearing Unit |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc |
| Status | ACTIVE |
| Housing Height | 5.5000 INCHES NOMINAL IN |
| Mounting Hole Type | ROUND, UNTHREADED |
| Mounting Hole Diameter | 0.5000 INCHES NOMINAL IN |
| Housing Width | 4.0000 INCHES NOMINAL IN |
| Shaft End Type | OPEN |
| Bore Diameter | 2.7000 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Housing Length | 4.6250 INCHES NOMINAL IN |
| Height From Bottom of Base to Bore Centerline | 3.0000 INCHES NOMINAL IN |
| 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 |
|---|---|
| 8253250 PRIMARY | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc (USA) |
| Reference | Meaning |
|---|---|
| 8253250 | 3/9 Design control — primary reference General Motors Corp Electro-Motive Div |
NSN 3130-00-400-6844 is a Housing,bearing Unit, manufactured by Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-00-400-6844 has 1 manufacturer part number on file: 8253250 (Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc).
Key specifications for 8253250: Housing Height: 5.5000 INCHES NOMINAL IN; Mounting Hole Type: ROUND, UNTHREADED; Mounting Hole Diameter: 0.5000 INCHES NOMINAL IN; Housing Width: 4.0000 INCHES NOMINAL IN. 9 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.