Material: 304 Stainless Steel 2B (Mill Finish)OD: 8.0"ID: 6.0"Bolt CL : 7.0"Installed Height: .250 +/-Threads: 10-32 Stainless Steel RIV-NUT Hardware Included: Yes, Stainless Steel 10-32 Gasket: YES- FKM VitonCover Plate Thickness: .104" (12GA)Bolt in Assembly, No Welding needed. THIS ASSEMBLY IS INTENDED FOR TOP OF TANK USE ONLY. NOT TO BE USED FULLY SUBMERGED IN FUELS