Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 58704 found under Disc Friction Brake by Columbus Mckinnon Corporation. The National Stock Number assigned to this part is 3950002480448, and the Federal Supply Class is 3950 Winches Hoists Cranes And Derricks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 58704.