Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B 2185 S PIECE 50 2 1 2IPS found under Bushing Sleeve by Kunkle Industries Inc. The National Stock Number assigned to this part is 3120012391376, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B 2185 S PIECE 50 2 1 2IPS.