Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SKK 516-C found under Key Socket Head Screw by Shinko Ind Ltd. The National Stock Number assigned to this part is 5120010454888, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SKK 516-C.