Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B3001-2 found under Collar Propeller by Hartzell Propeller Inc. The National Stock Number assigned to this part is 1610008425832, and the Federal Supply Class is 1610 Aircraft Propellers And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B3001-2.