Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 537-004 found under Actuator Electro by Jaidinger Mfg Co Inc. The National Stock Number assigned to this part is 6115000101378, and the Federal Supply Class is 6115 Generators And Generator Sets Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 537-004.