Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 44001 found under Knob Swivel Shoe by Northwestern Tools Inc. The National Stock Number assigned to this part is 5355008671119, and the Federal Supply Class is 5355 Knobs And Pointers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 44001.