The Bearing,roller,cylindrical, cataloged under National Stock Number 3110-00-720-2499, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Skf Usa Inc.. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3110-00-720-2499 |
| Primary Part Number | 523990-1 |
| Item Name | Bearing,roller,cylindrical |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Skf Usa Inc. |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Internal Clearance | 0.0005 INCHES MINIMUM RADIAL AND 0.0015 INCHES MAXIMUM RADIAL IN |
| Locating Feature | ONE DIRECTION |
| Surface Finish | GROUND |
| Style Designator | SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE |
| Overall Outside Diameter | 1.6535 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Standard Tolerance Designation | RBEC NO.5 |
| Bore Diameter | 0.7874 INCHES NOMINAL IN |
| 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 |
NSN 3110-00-720-2499 is a Bearing,roller,cylindrical, manufactured by Skf Usa Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-720-2499 has 2 manufacturer part numbers on file: 523990-1 (Teledyne Brown Engineering, Inc. Dba Teledyne Turbine Engines Div Teledyne Turbine Engines), 523990-1 (Skf Usa Inc.).
Key specifications for 523990-1: Retainer Fabrication Method: MACHINED; Internal Clearance: 0.0005 INCHES MINIMUM RADIAL AND 0.0015 INCHES MAXIMUM RADIAL IN; Locating Feature: ONE DIRECTION; Surface Finish: GROUND. 13 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.