Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K674438-11 found under Shaft Spur Gear by Pine Meadow Machine Co Inc. The National Stock Number assigned to this part is 3040008320823, 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 K674438-11.