Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21212254-453 found under Screw Machine by Bosch Rexroth Aktiebolag. The National Stock Number assigned to this part is 5305014166695, 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 21212254-453.