Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 124 0031 191 found under Circuit Breaker by Rockwell Collins Inc. The National Stock Number assigned to this part is 5925013599717, and the Federal Supply Class is 5925 Circuit Breakers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 124 0031 191.