Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4740 found under Gage Band by Warner Electric Brake And Clutch Co. The National Stock Number assigned to this part is 5220004749156, and the Federal Supply Class is 5220 Inspection Gages And Precision Layout Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4740.