Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 438-003-000-2 found under Isolator Acoustic by Western Reserve Electronics Inc. The National Stock Number assigned to this part is 6130000036099, and the Federal Supply Class is 6130 Converters Electrical Non Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 438-003-000-2.