The Bearing,roller,cylindrical, cataloged under National Stock Number 3110-01-021-1918, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Rmb Miniature Bearings Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3110-01-021-1918 |
| Primary Part Number | NU617 |
| Item Name | Bearing,roller,cylindrical |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rmb Miniature Bearings Inc |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Internal Clearance | 0.0002 INCHES MINIMUM RADIAL AND 0.0006 INCHES MAXIMUM RADIAL IN |
| Locating Feature | NONLOCATING |
| Surface Finish | GROUND |
| Style Designator | SINGLE ROW, NON-LOCATING, CYLINDRICAL INNER AND OUTER RING, SEPARABLE |
| Material Document and Classification | AISI 52100 ASSN STD SINGLE MATERIAL RESPONSE INNER RING |
| Material Document and Classification | AISI 52100 ASSN STD SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | AISI 52100 ASSN STD SINGLE MATERIAL RESPONSE ROLLER |
| Overall Outside Diameter | 17.0 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Standard Tolerance Designation | RBEC NO.1 |
| Bore Diameter | 6.0 MILLIMETERS NOMINAL MM |
| Material | COPPER ALLOY RETAINER |
| Material | STEEL COMP E52100 ROLLER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| 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 |
|---|---|
| NU617 PRIMARY | Rmb Miniature Bearings Inc (USA) |
| Reference | Meaning |
|---|---|
| 220426 | 5/2 Secondary reference U.S. Government activity |
NSN 3110-01-021-1918 is a Bearing,roller,cylindrical, manufactured by Rmb Miniature Bearings Inc, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-021-1918 has 1 manufacturer part number on file: NU617 (Rmb Miniature Bearings Inc).
Key specifications for NU617: Retainer Fabrication Method: MACHINED; Internal Clearance: 0.0002 INCHES MINIMUM RADIAL AND 0.0006 INCHES MAXIMUM RADIAL IN; Locating Feature: NONLOCATING; Surface Finish: GROUND. 16 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.