17mm Ball Head to 1/4"-20 Screw Adapter — Ball Joint Converter for Camera Mounts & Monitor Brackets

Identify the thread type on each end of your connection: check whether your mount or bracket uses a standard 1/4"-20 threaded hole or stud, or a 17mm ball-end screw. Then select the adapter type that matches your input and output. For example, if your phone mount has a ball-end socket and your tripod has a 1/4"-20 stud, choose the 1/4" screw to ball-end screw type. If you need to connect two ball-end devices to a single 1/4" port, choose 2 ball-end screws to 1/4" screw.

The 1/4"-20 UNC thread is the universal mounting standard used by cameras, tripods, ballheads, monitor mounts, microphone stands, and the vast majority of photography and videography accessories. If your device has a standard camera mount hole or stud, it is almost certainly 1/4"-20. This standard is used across brands including Manfrotto, Joby, SmallRig, and most generic mounting hardware.

A 17mm ball-end screw features a spherical ball head at the tip instead of a flat or hex end. This ball seats into a matching socket on phone mounts, monitor brackets, and security camera brackets, allowing the mount to pivot and lock at any angle. The 17mm ball diameter is a common size for this type of articulating mount system, widely used in consumer and prosumer mounting hardware.

Load capacity depends on the specific adapter type and the clamping force of the receiving socket. These adapters are generally suitable for lightweight to medium loads such as smartphones, small monitors (typically up to 7"), action cameras, and compact security cameras. For heavy DSLR or cinema camera setups, a dedicated heavy-duty ballhead rated for your camera's weight is generally recommended.

The metal construction provides reasonable durability for outdoor use in typical conditions. For extended outdoor or high-humidity environments, periodically inspect the threads for corrosion and apply a light lubricant if needed. These adapters are not rated for fully waterproof or marine applications.

Both the short and long gimbal bracket extensions use a 1/4"-20 screw interface and add an articulating arm between your mount and device. The short version is generally suited for compact setups where minimal reach is needed, while the long version provides more offset distance — useful for positioning a monitor or phone further away from the camera body or bracket on a rig or cage.

Yes. Many security camera wall brackets and ceiling mounts use a 17mm ball-end screw or a 1/4"-20 threaded interface. These adapters allow you to mix and match between ball-end and standard threaded connections, making them useful for repositioning, upgrading, or repurposing security camera mounting hardware without replacing the entire bracket.