Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K30 21 01 3 found under Cap Plug Protective Dust And Moisture Seal by Bulgin. The National Stock Number assigned to this part is 5340010441417, 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 K30 21 01 3.