Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 113A604-7 found under Filter Element Air Conditioning by Enviro Systems Inc. The National Stock Number assigned to this part is 4130015174038, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 113A604-7.