Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 300 (B300) KING AIR 350 found under Airplanecargo Transport by Hawker Beechcraft. The National Stock Number assigned to this part is 1510016850432, 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 300 (B300) KING AIR 350.