Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KB4-264W found under Bearing Plain Rod End by Dover Engineered Systems Inc. The National Stock Number assigned to this part is 3120013392119, 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 KB4-264W.