Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AX42 found under Belt V by Optibelt Corp. The National Stock Number assigned to this part is 3030000628381, and the Federal Supply Class is 3030 Belting Drive Belts Fan Belts And Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AX42.