The Bearing,roller,tapered, cataloged under National Stock Number 3110-01-365-1815, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is The Timken Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-01-365-1815 |
| Primary Part Number | LM739749/LM739710 |
| Item Name | Bearing,roller,tapered |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Cup Width | 30.162 MILLIMETERS NOMINAL30.162 MILLIMETERS NOMINAL MM |
| Style Designator | STRAIGHT BORE, NORMAL ANGLESTRAIGHT BORE, NORMAL ANGLE |
| Overall Outside Diameter | 257.175 MILLIMETERS NOMINAL257.175 MILLIMETERS NOMINAL MM |
| Backface Corner Radius | 3.3 MILLIMETERS NOMINAL3.3 MILLIMETERS NOMINAL MM |
| Cone Corner Radius | 3.5 MILLIMETERS NOMINAL3.5 MILLIMETERS NOMINAL MM |
| Standout Width | 9.5260 MILLIMETERS NOMINAL9.5260 MILLIMETERS NOMINAL MM |
| Cone Width | 39.688 MILLIMETERS NOMINAL39.688 MILLIMETERS NOMINAL MM |
| Bore Diameter | 196.850 MILLIMETERS NOMINAL196.850 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| LM739749/LM739710 PRIMARY | The Timken Corporation (USA) |
| LM739749/LM739710 | Ntn Bearing Corporation of America (USA) |
| Reference | Meaning |
|---|---|
| 851390 | 5/9 Secondary reference Smith-Berger Marine, Inc |
| 851389 | 5/9 Secondary reference Smith-Berger Marine, Inc |
NSN 3110-01-365-1815 is a Bearing,roller,tapered, manufactured by The Timken Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-365-1815 has 2 manufacturer part numbers on file: LM739749/LM739710 (The Timken Corporation), LM739749/LM739710 (Ntn Bearing Corporation of America).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-377-6625, 4930-01-378-2154. Verify interchangeability with system specifications before substitution.
Key specifications for LM739749/LM739710: Cup Width: 30.162 MILLIMETERS NOMINAL30.162 MILLIMETERS NOMINAL MM; Style Designator: STRAIGHT BORE, NORMAL ANGLESTRAIGHT BORE, NORMAL ANGLE; Overall Width: 39.688 MILLIMETERS NOMINAL39.688 MILLIMETERS NOMINAL MM; Overall Outside Diameter: 257.175 MILLIMETERS NOMINAL257.175 MILLIMETERS NOMINAL MM. 8 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.