Contact Pins and Dielectrics can be damaged if misaligned connectors are mated. Make sure that mating interfaces are parallel and on center during Mate/De-Mate cycle
Plating and surface finish of outer and inner contacts can be damaged if connector bodies are allowed to rotate during Mate/De-Mate cycle. Use wrench flats on connector bodies to keep them stationary while rotating coupling nut during mate/de-mate.
Minimized Load Configuration
Allow test cable to assume natural bend configuration route between test port and device port. Loosen test port connection when test configuration is largely different than test configuration. Route the cable, connect device port loosely then tighten both port connections to recommended coupling torque. This method will minimize most bend and twist loading issues.