Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21212541-634 found under Screw Machine by Cargotec Sweden Ab Macgregor Cranes. The National Stock Number assigned to this part is 5305014855912, 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 21212541-634.