Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number H72-074 found under Packing Release Val by Dynex Rivett Inc. The National Stock Number assigned to this part is 5310008297095, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like H72-074.