Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 231131 found under Shield Ball Socket by Brockway Motor Trucks. The National Stock Number assigned to this part is 2520004618861, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 231131.