Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S861C91G18 found under Lining Friction by Westinghouse Electric Corp. The National Stock Number assigned to this part is 3040000728400, 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 S861C91G18.