Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SM-B-447015 found under Retainer Arm by L3 Communications Corp. The National Stock Number assigned to this part is 2530010999755, and the Federal Supply Class is 2530 Vehicular Brake Steering Axle Wheel And Track Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SM-B-447015.