Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HAV-501 found under Fluid Needle Valve Spray Gun Pai by Itw Finishing Llc. The National Stock Number assigned to this part is 4940014364664, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HAV-501.