Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 212123-1 found under Gearshaft Assembly by Ridge Associates Inc. The National Stock Number assigned to this part is 3040011552982, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 212123-1.