When creating museum exhibition design drawings, the drawings become part of the fabrication contract documents. I just spent an thirty minutes looking for the standard specification for Stainless Steel (All visible or in-case material to be supplied in Stainless Steel (Grade 316) unless otherwise specified). Thought I would put together a Museum Exhibition Contract Drawing Specifications post. The National Park Service (NPS) and the Smithsonian are the benchmarks for Museum Exhibition Contract Drawing Specifications.
National Park Service Standard Exhibit Planning, Design, and Fabrication Specifications Harpers Ferry Center (2012)
Museum & Visitor Center Exhibit Planning, Design, and Production Process (2008)
National Park Service, Standard Exhibit Fabrication Specifications (2001)
Smithsonian Institution, Facilities Design Standards (2012)
Smithsonian National Air and Space Museum Exhibition Guidelines (2018)