The Bearing,roller,tapered, cataloged under National Stock Number 3110-00-101-4181, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-101-4181 |
| Item Name | Bearing,roller,tapered |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Status | ACTIVE |
| Cup Width | 1.2500 INCHES NOMINAL IN |
| Style Designator | STRAIGHT BORE, NORMAL ANGLE |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE CUP |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE ROLLER |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE CONE |
| Overall Outside Diameter | 5.7500 INCHES NOMINAL IN |
| Backface Corner Radius | 0.1300 INCHES NOMINAL IN |
| Cone Corner Radius | 0.1400 INCHES NOMINAL IN |
| Standout Width | 0.3750 INCHES NOMINAL IN |
| Cone Width | 1.6250 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 4 |
| Bore Diameter | 2.7500 INCHES NOMINAL IN |
| Material | STEEL CUP |
| Material | STEEL RETAINER |
| Material | STEEL CONE |
| Material | STEEL ROLLER |
| 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 |
|---|---|
| WS9030-20-21 | 5/9 Secondary reference Carroll Engineering Co |
| 655-653 | 5/1 Secondary reference Federal-Mogul Corp Government Sales Dept |
| WS9030PCS20-21 | 5/9 Secondary reference Carroll Engineering Co |
| FF-B-187 | 4/1 Identification reference U.S. Government activity |
| MS19081-254 | 2/2 Government specification standardization U.S. Government activity |
| 14656-442 | 5/1 Secondary reference Calgon Carbon Uv Technologies Llc Dba Hyde Marine |
| 655-653 | 5/1 Secondary reference The Timken Corporation |
NSN 3110-00-101-4181 is a Bearing,roller,tapered, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-00-406-8374. Verify interchangeability with system specifications before substitution.
Key specifications for 3110-00-101-4181: Cup Width: 1.2500 INCHES NOMINAL IN; Style Designator: STRAIGHT BORE, NORMAL ANGLE; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE CUP; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE ROLLER. 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.