Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AA51176-1A9B found under File Rotary by Federal Commercial Item Description. The National Stock Number assigned to this part is 3455000234280, and the Federal Supply Class is 3455 Cutting Tools For Machine Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AA51176-1A9B.