The APC-7 connector (also referred to as a 7 mm connector) is a precision coaxial connector used on laboratory microwave test equipment for frequencies up to 18 GHz. Development of the connector was a joint effort between HP and Amphenol, which began in the 1960s. It's a very precise sexless connector. Our SMA to 7mm adapters are good through 18ghz, the limit of our 7mm interface. 5mm, BNC, DIN Coax, EFI HD, Euro, F, FMC, FME, G, H. 6, N, NEX10. Pricing (USD) Filter the results in the table by unit price based on your quantity. A tariff of 36 % may be applied if shipping to the United States. Do you have a question or a project enquiry that you'd like to talk to us about?.