Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 61C10925 found under Shaft Drive Trainer by Presnal Engineering Co. The National Stock Number assigned to this part is 3040010100219, 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 61C10925.