Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R1131-912 found under Bracket Vehicular C by 4 M Company Inc. The National Stock Number assigned to this part is 2590016186161, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R1131-912.