Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SI211344 found under Inclinometer Antenna by Columbia Research Laboratories Inc. The National Stock Number assigned to this part is 5985014549997, 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 SI211344.