Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 45 3211 found under Clamp Synchro Mount by G E C Marconi Avionics Ltd. The National Stock Number assigned to this part is 5340013155982, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 45 3211.