Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B64-3545 found under Spring Arm Retainer by Atb Laurence Scott Ltd. The National Stock Number assigned to this part is 3950004822710, 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 B64-3545.