SMA-SMA coaxial adapters are extremely popular. The sma adapters on this page are rated to 18ghz; we also offer 27ghz versions of sma to sma adapters on a separate page. As with most rf / microwave coaxial adapters, these sma adapters come in different "grades", vswr & construction material. All our sma to sma adapters meet MIL-Std-883b for interface dimensions. Our sma in series straight adapters come in f/f, m/f, & m/m configurations.