Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LS12906-187 found under Screw by Alcoa Fastening Systems Ltd. The National Stock Number assigned to this part is 5305001578383, 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 LS12906-187.