Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 27945-4 found under Line Radio Frequenc by Circle Prime Manufacturing Inc. The National Stock Number assigned to this part is 5985012717559, 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 27945-4.