The Roller,linear-Rotary Motion, cataloged under National Stock Number 3120-01-360-1879, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-360-1879 |
| Primary Part Number | 1121C0318 |
| Item Name | Roller,linear-Rotary Motion |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Style Designator | PLAIN |
| Outside Diameter | 1.840 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | NICKEL ALLOY |
| Face Width | 1.870 INCHES NOMINAL IN |
| Bore Inside Diameter | 0.999 INCHES MINIMUM AND 1.000 INCHES MAXIMUM 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 |
|---|---|
| 1121C0318 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1221C0318 | C/1 Advisory reference — outside the item-of-supply concept Lockheed Martin Corporation Div Rms |
| 1121C0318 | 5/9 Secondary reference Lord Corporation Dba Lord Corp |
| J-18839-1 | C/1 Advisory reference — outside the item-of-supply concept Lord Corporation Dba Lord Corp |
| 1221C0318 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 3120-01-360-1879 is a Roller,linear-Rotary Motion, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-360-1879 has 1 manufacturer part number on file: 1121C0318 (Lockheed Martin Corporation Div Rms).
Key specifications for 1121C0318: Style Designator: PLAIN; Outside Diameter: 1.840 INCHES NOMINAL IN; Casehardening Indicator: NOT CASEHARDENED; Special Features: 1.500 IN. RADIUS BY 1.000 IN. W,MACHINED IN OD OF BODY IN. 6 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.