1. Other materials can be supplied.

2. Gr 2H nuts used with B7 studs for carbon steel or alloy valves.

3. Gr 7 nuts used with L7 studs for low temperature valves.

4. Gr 8 nuts used with B8 studs for stainless steel valves.

5. Gr 8M nuts used with B8M studs for stainless steel valves.