Dedicated 3D model converters like the 3D Object Converter should be able to help in conversion or translation of many 3D formats, including LWO (LightWave Object) or STP (ISO STEP product data). Both are pretty common 3D formats, so there should be not much of trouble in converting LWO to STP.
Convert LightWave object file to ISO-10303 STEP product data.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert lwo to stp on Windows
3D Object Converter is a powerful 3D polygon model translation and interactive viewing shareware tool that allows arbitrary 3D model data to be imported from external sources, exported to various industry standard 3D file formats with great accuracy and quality.
Convert from lwo file
to stp file
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.