Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C18070 SS SDS 12 found under Thumbscrew by Accurate Screw Machine Co. The National Stock Number assigned to this part is 5305016711685, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C18070 SS SDS 12.