Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PDF 2A 250 24420 found under Amplifier Radio Fre by Merrimac Industries Inc. The National Stock Number assigned to this part is 5996011119720, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PDF 2A 250 24420.