Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KBK258B found under Slide Drawer Extension by Drs Consolidated Controls Inc. The National Stock Number assigned to this part is 5340013627875, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KBK258B.