The Roller,linear-Rotary Motion, cataloged under National Stock Number 3120-01-008-7948, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-008-7948 |
| Item Name | Roller,linear-Rotary Motion |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Style Designator | PLAIN, COUNTERBORED |
| Outside Diameter | 0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Counterbore Depth | 0.117 INCHES NOMINAL IN |
| Counterbore Diameter | 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | STEEL CORROSION RESISTING |
| Face Width | 0.317 INCHES MINIMUM AND 0.321 INCHES MAXIMUM IN |
| Bore Inside Diameter | 0.313 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 |
| Reference | Meaning |
|---|---|
| 3265941 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3120-01-008-7948 is a Roller,linear-Rotary Motion, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
Key specifications for 3120-01-008-7948: Style Designator: PLAIN, COUNTERBORED; Outside Diameter: 0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Counterbore Depth: 0.117 INCHES NOMINAL IN; Counterbore Diameter: 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN. 8 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.