Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TM632AR found under Head Cylinder Botto by Banner Industries Inc. The National Stock Number assigned to this part is 2820003881145, and the Federal Supply Class is 2820 Steam Engines Reciprocating And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TM632AR.