Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4B25 found under Clamp Hub by Advanced Logic Resources Inc. The National Stock Number assigned to this part is 3040000606183, 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 4B25.