Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P249B5190 found under Probe Waveguide by Mutron Corp. The National Stock Number assigned to this part is 5985006432749, and the Federal Supply Class is 5985 Antennas Waveguides And Related Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P249B5190.