Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R17 1021 found under Bracket Vehicular C by Marmon Herrington Company Inc. The National Stock Number assigned to this part is 2590015945194, 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 R17 1021.