The Housing,bearing Unit, cataloged under National Stock Number 3130-01-253-5979, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Timken Co Div the Timken Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-01-253-5979 |
| Primary Part Number | RCJ1 1/4 |
| Item Name | Housing,bearing Unit |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Timken Co Div the Timken Company |
| Status | ACTIVE |
| Lubrication Material | GREASE |
| Lubrication Fitting Type | PIPE PLUG |
| Assembly Overall Length | 2.125 INCHES NOMINAL IN |
| Flange Thickness | 0.656 INCHES NOMINAL IN |
| Mounting Hole Type | ROUND, UNTHREADED |
| Style Designator | FLANGE BLOCK |
| Mounting Hole Diameter | 0.516 INCHES NOMINAL IN |
| Housing Width | 4.625 INCHES NOMINAL IN |
| Bore Diameter | 2.1875 INCHES NOMINAL IN |
| Material | IRON CAST OVERALL |
| Housing Length | 1.469 INCHES NOMINAL IN |
| Lubrication Fitting Angle From Horizontal Centerline | 45.0 DEGREES NOMINAL |
| Center to Center Distance Between Mounting Holes Along Side of a Square | 3.625 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 |
|---|---|
| RCJ1 1/4 PRIMARY | Timken Co Div the Timken Company (USA) |
| Reference | Meaning |
|---|---|
| RCJ1-1/4 | 5/9 Secondary reference Amfs American Fleet Services |
NSN 3130-01-253-5979 is a Housing,bearing Unit, manufactured by Timken Co Div the Timken Company, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-253-5979 has 1 manufacturer part number on file: RCJ1 1/4 (Timken Co Div the Timken Company).
Key specifications for RCJ1 1/4: Lubrication Material: GREASE; Lubrication Fitting Type: PIPE PLUG; Assembly Overall Length: 2.125 INCHES NOMINAL IN; Flange Thickness: 0.656 INCHES NOMINAL IN. 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.