Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS51959-68B found under Screw Machine by De Marzi Victor. The National Stock Number assigned to this part is 5305007015119, 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 MS51959-68B.