Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OD 8438 S5742 found under Attenuator Fixed by Cobham Electronic Systems Inc. The National Stock Number assigned to this part is 5985014304294, and the Federal Supply Class is 5985 Antennas Waveguides And Related Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like OD 8438 S5742.