Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KD74403-011 found under Cap Plug Protective by Kaman Aerospace Corporation. The National Stock Number assigned to this part is 5340016422843, 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 KD74403-011.