Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 981-003 found under Knob by Hollingsworth John R Co. The National Stock Number assigned to this part is 5355001249276, 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 981-003.