The Petroleum Industry Data Dictionary (PIDD) has over 4,100 templates made up with a Noun:Modifier (think Bearing:Ball) and related attributes (such as inside and outside diameter). These templates, mapped to version 10.0501 UNSPSC, have been built up by the industry for the industry over many years of collaboration. The templates are hosted on sparesFinder’s Masterpiece software. Access is free, you will need to register to gain access. You are permitted to make recommendations and suggest improvements, and additions to keep the templates up to date.