Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A57-247 found under Connector Tube by Bf Goodrich Aerospace. The National Stock Number assigned to this part is 1630003053547, and the Federal Supply Class is 1630 Aircraft Wheel And Brake Systems. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A57-247.