The Ring,bearing,inner, cataloged under National Stock Number 3110-01-308-0178, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Rbc Bearings Incorporated Div West Trenton Division. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-308-0178 |
| Primary Part Number | IR-7154 |
| Item Name | Ring,bearing,inner |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rbc Bearings Incorporated Div West Trenton Division |
| Status | ACTIVE |
| Surface Finish | GROUND |
| Style Designator | SOLID INNER RACE, JOURNAL AND NEEDLE |
| Overall Outside Diameter | 0.7488 INCHES MINIMUM AND 0.7493 INCHES MAXIMUM IN |
| Bore Shape | STRAIGHT |
| Bore Diameter | 0.4996 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| IR-7154 PRIMARY | Rbc Bearings Incorporated Div West Trenton Division (USA) |
| Reference | Meaning |
|---|---|
| 1R-7154 | 5/9 Secondary reference Rbc Bearings Incorporated Div West Trenton Division |
NSN 3110-01-308-0178 is a Ring,bearing,inner, manufactured by Rbc Bearings Incorporated Div West Trenton Division, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-308-0178 has 1 manufacturer part number on file: IR-7154 (Rbc Bearings Incorporated Div West Trenton Division).
Key specifications for IR-7154: Surface Finish: GROUND; Style Designator: SOLID INNER RACE, JOURNAL AND NEEDLE; Overall Width: 1.0050 INCHES MINIMUM AND 1.0100 INCHES MAXIMUM IN; Overall Outside Diameter: 0.7488 INCHES MINIMUM AND 0.7493 INCHES MAXIMUM 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.