Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 41-2377 found under Pulley Motor by Sargent Welch Scientific Co. The National Stock Number assigned to this part is 3020012169269, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 41-2377.