Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KD74403-013 found under Spacer Sleeve by Kaman Aerospace Corporation. The National Stock Number assigned to this part is 5365016423703, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KD74403-013.