Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FTR 1201 4 1 3 530 S found under Retainer Assembled Nut by Fatigue Technology International. The National Stock Number assigned to this part is 5340016599020, 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 FTR 1201 4 1 3 530 S.