Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 41-1487 found under Vane Pump Rotary by Sargent Welch Scientific Co. The National Stock Number assigned to this part is 4320000762371, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 41-1487.