Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C21S1616A0 found under Contact Electrical by Hughes Corporation. The National Stock Number assigned to this part is 5999011355054, and the Federal Supply Class is 5999 Miscellaneous Electrical And Electronic Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C21S1616A0.