Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S6137-66519-1 found under Gearshaft Multiple Gears by Spx Precision Components Llc. The National Stock Number assigned to this part is 3040000659156, 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 S6137-66519-1.