Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MAS1218-384 found under Screw Machine by Aerospace Industries Llc. The National Stock Number assigned to this part is 5305013362503, 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 MAS1218-384.