Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3967-1 found under Yoke Knuckle by Pdi Ground Support Systems Inc. The National Stock Number assigned to this part is 2530004205393, 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 3967-1.