The Bearing Unit,plain, cataloged under National Stock Number 3130-01-383-4875, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3130-01-383-4875 |
| Primary Part Number | 1214C3161 |
| Item Name | Bearing Unit,plain |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Assembly Overall Length | 1.218 INCHES NOMINAL IN |
| Flange Thickness | 0.312 INCHES NOMINAL IN |
| Mounting Hole Type | ROUND, UNTHREADED |
| Style Designator | FLANGE BLOCK |
| Mounting Hole Diameter | 0.219 INCHES NOMINAL IN |
| Housing Width | 1.620 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Bore Diameter | 0.6240 INCHES NOMINAL IN |
| Material | STEEL COMP 316 OVERALL |
| Housing Length | 0.406 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Holes Along Side of a Square | 1.620 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 |
|---|---|
| 1214C3161 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1214C3161 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 3130-01-383-4875 is a Bearing Unit,plain, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-383-4875 has 1 manufacturer part number on file: 1214C3161 (Lockheed Martin Corporation Div Rms).
Key specifications for 1214C3161: Assembly Overall Length: 1.218 INCHES NOMINAL IN; Flange Thickness: 0.312 INCHES NOMINAL IN; Mounting Hole Type: ROUND, UNTHREADED; Style Designator: FLANGE BLOCK. 11 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.