Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 571-231-1112 found under Screw Cap Socket Head by Xenotronix Tli Inc. The National Stock Number assigned to this part is 5305015037156, 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 571-231-1112.