Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A1 3222S253 found under Brake Shoe by Koehring Co. The National Stock Number assigned to this part is 2530004957698, 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 A1 3222S253.