Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1537-740 found under Coil Radio Frequenc by American Precision Industries Inc. The National Stock Number assigned to this part is 5950007279228, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1537-740.