Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SL31992SH3 found under Coupler Antenna by C And S Antennas Inc. The National Stock Number assigned to this part is 5985013715900, 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 SL31992SH3.