Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MTM-10523 found under Housing Mechanical Drive by Merrill Tool And Machine Inc. The National Stock Number assigned to this part is 3950016118578, and the Federal Supply Class is 3950 Winches Hoists Cranes And Derricks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MTM-10523.