Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S1-2A found under Hoist Wire Rope by R And M Materials Handling Inc. The National Stock Number assigned to this part is 3950005109072, 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 S1-2A.