Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C99-20LL found under Cable Assembly Special Purpose E by David Clark Company Incorporated. The National Stock Number assigned to this part is 5995016594151, and the Federal Supply Class is 5995 Cable Cord And Wire Assemblies Communication Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C99-20LL.