The Bearing,roller,tapered, cataloged under National Stock Number 3110-00-100-4181, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-100-4181 |
| Item Name | Bearing,roller,tapered |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Status | ACTIVE |
| Cup Width | 1.1250 INCHES NOMINAL IN |
| Style Designator | STRAIGHT BORE, NORMAL ANGLE |
| Overall Outside Diameter | 5.0000 INCHES NOMINAL IN |
| Backface Corner Radius | 0.1250 INCHES NOMINAL IN |
| Cone Corner Radius | 0.1400 INCHES NOMINAL IN |
| Standout Width | 0.3125 INCHES NOMINAL IN |
| Cone Width | 1.4240 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Bore Diameter | 2.5000 INCHES NOMINAL IN |
| Material | STEEL RETAINER |
| Material | STEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E52100 ROLLER |
| Material | STEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E52100 CUP |
| Material | STEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E52100 CONE |
| 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 |
|---|---|
| 12C28 | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
| 565AND563 | 5/9 Secondary reference The Timken Corporation |
| B3327 | 5/9 Secondary reference Cooper Machinery Services Llc |
| MS19081-107 | 2/2 Government specification standardization U.S. Government activity |
| 565-563 | 5/9 Secondary reference The Timken Corporation |
| 70684118 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| XGD-12-C-28 | 5/9 Secondary reference Blue Tee Corp. Dba Gefco |
| FF-B-187 | 4/1 Identification reference U.S. Government activity |
| 12C28 | 5/9 Secondary reference Cooper Industries Industrial Machinery Div |
NSN 3110-00-100-4181 is a Bearing,roller,tapered, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 8040-01-387-4774, 6680-01-457-8988. Verify interchangeability with system specifications before substitution.
Key specifications for 3110-00-100-4181: Cup Width: 1.1250 INCHES NOMINAL IN; Style Designator: STRAIGHT BORE, NORMAL ANGLE; Overall Width: 1.4375 INCHES NOMINAL IN; Overall Outside Diameter: 5.0000 INCHES NOMINAL IN. 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.