Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AB043 1 found under Shaft Shouldered by Acrow Corp Of America. The National Stock Number assigned to this part is 3040015517028, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AB043 1.