Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 16990-94C-20B found under Screw Cap Socket Head by Sps Technologies Inc. The National Stock Number assigned to this part is 5305012770827, 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 16990-94C-20B.