The Bearing,roller,tapered, cataloged under National Stock Number 3110-00-017-5129, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-017-5129 |
| Item Name | Bearing,roller,tapered |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Status | ACTIVE |
| Cup Width | 2.1250 INCHES NOMINAL IN |
| Style Designator | STRAIGHT BORE, DOUBLE CUP, SINGLE CONES |
| Overall Outside Diameter | 5.3750 INCHES NOMINAL IN |
| Backface Corner Radius | 0.0310 INCHES NOMINAL IN |
| Departure From Cited Designator | AS MODIFIED BY BORE DIAMETER,AS MODIFIED BY LUBRICATION MATERIAL |
| Nondefinitive Spec/std Data | 761 TYPE |
| Cone Corner Radius | 0.1400 INCHES NOMINAL IN |
| Standout Width | 0.3125 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Bore Diameter | 3.2500 INCHES NOMINAL 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 |
| Reference | Meaning |
|---|---|
| FFB187 | 4/1 Identification reference U.S. Government activity |
| 495-90147 | 3/9 Design control — primary reference The Timken Corporation |
| 495-493DCANDX1S495 | 5/9 Secondary reference The Timken Corporation |
| D50238-13 | 5/9 Secondary reference Orton-Mccullough Crane Co |
| A38045 | 5/9 Secondary reference The Timken Corporation |
NSN 3110-00-017-5129 is a Bearing,roller,tapered, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
Key specifications for 3110-00-017-5129: Cup Width: 2.1250 INCHES NOMINAL IN; Style Designator: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES; Overall Width: 2.7500 INCHES NOMINAL IN; Overall Outside Diameter: 5.3750 INCHES NOMINAL IN. 11 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.