Kupo KS-063 – Brass Adapter with 3/8″-16 Male and 1/4″-20 Female Threads

Kupo KS-063 is a compact thread adapter that allows photo, video and studio accessories with different thread sizes to be connected. It features a 3/8″-16 male thread and a 1/4″-20 female thread. The adapter screws into a base, tripod, clamp or articulated arm with a 3/8″-16 female thread, after which an accessory with a 1/4″-20 male thread can be attached.

Made from solid brass, Kupo KS-063 weighs approximately 30 g. Its small size and simple construction make it a practical tool in a studio, on location or as part of a portable camera kit, helping combine equipment that uses different mounting standards within the same setup.

Converting a 3/8″-16 connection to 1/4″-20

The main purpose of Kupo KS-063 is to make a mounting point with a 3/8″-16 female thread compatible with an accessory featuring a 1/4″-20 male thread. The adapter’s larger 3/8″-16 male thread screws into a matching female thread, while the 1/4″-20 female thread in its centre accepts an accessory with the smaller male thread.

The 3/8″-16 designation means the thread has a nominal diameter of 3/8 inch and 16 threads per inch. Similarly, 1/4″-20 refers to a nominal diameter of 1/4 inch and 20 threads per inch. Both sizes are widely used in photo and video equipment, but they do not connect directly to one another. Kupo KS-063 provides the necessary mechanical connection between them.

The adapter does not add articulation, height adjustment or a quick-release mechanism. It is a mechanical thread size adapter that allows an accessory with a 1/4″-20 male thread to be used with an existing 3/8″-16 female mounting point.

Suitable for photo, video and studio equipment

Kupo KS-063 can be used with various tripods, tripod heads, articulated arms, extension arms, clamps, mounting plates and other photo or video accessories. The adapter may be required when a sturdy studio mount features a 3/8″-16 female thread, while a monitor holder, light, microphone mount or camera accessory being installed has a 1/4″-20 male thread.

As it uses common thread standards, the adapter is not limited to equipment from a specific camera, tripod or lighting manufacturer. Compatibility depends on the actual threads of the components being connected. The base must have a 3/8″-16 female thread, while the accessory being installed must feature a 1/4″-20 male thread.

Kupo KS-063 can also be useful in permanent studio setups where several thread sizes are used within the same rig. The adapter allows existing mounting equipment to be used more flexibly and may eliminate the need to replace an entire tripod head, clamp or articulated arm solely because it uses a different thread size.

Solid brass construction

Kupo KS-063 is made from solid brass. Brass is well suited to thread adapters due to its rigid and durable construction, which helps the connection retain its shape through repeated installation and removal. The material provides a secure metal connection without the flexing or cracking associated with plastic adapters.

Its brass surface withstands conventional studio and location use and is suitable for both permanently installed equipment and portable accessory kits. To preserve the threads over time, the adapter should be installed straight while avoiding cross-threading and excessive tightening.

Brass-coloured finish also makes the adapter easy to distinguish among black or silver mounting accessories. This can be practical in a larger equipment case containing various screws, thread adapters and small mounting components.

Compact adapter weighing only 30 g

Kupo KS-063 weighs approximately 30 g, adding very little weight to camera or studio equipment. Its compact shape allows it to be stored in a small compartment of a camera bag, toolbox or accessory pouch, ensuring that the necessary thread adapter is always available on location.

Low weight is particularly useful with portable rigs, articulated arms and compact tripod systems, where every additional component affects total setup weight. At the same time, solid brass construction provides a more reliable solution than extremely lightweight plastic thread adapters.

As the adapter requires no separate tools or complex setup, it can be quickly added to or removed from a mounting system. This makes Kupo KS-063 a practical spare part for photographers, videographers, lighting technicians and studio professionals working with equipment from different manufacturers.

Installation and safe use

Before installing Kupo KS-063, check that the base has a 3/8″-16 female thread and the accessory being connected has a 1/4″-20 male thread. Metric threads with a similar appearance may not be compatible, and forcing an incorrect thread into the adapter can damage both components.

The adapter should be screwed straight into the base by hand first. If strong resistance is felt immediately, remove it and check the thread size and alignment. Starting the connection at an angle may damage both the adapter and attached equipment.

Once the adapter is secured, an accessory with a 1/4″-20 male thread can be screwed into its female thread. The connection should be tight enough to prevent the accessory from rotating or coming loose, but excessive force should be avoided. Brass is durable, although overtightening may damage threads on the adapter or connected device.

Kupo KS-063 does not increase the permitted load capacity of a tripod, clamp or articulated arm. The load capacity of the complete system always depends on its weakest component, connection positions and the distance between the installed equipment’s centre of gravity and mounting point. When using heavier equipment, ensure that every part of the system is suitable for the intended load.

A practical thread adapter for filming equipment

Kupo KS-063 is useful when an existing mount with a 3/8″-16 female thread and a device with a 1/4″-20 male thread cannot be connected directly. It allows various photo, video, lighting and audio accessories to be used with existing tripods, clamps and articulated arms without replacing larger system components.

Solid brass construction, widely used thread sizes and a weight of approximately 30 g make the adapter suitable for both professional studio equipment and compact travel kits. Kupo KS-063 is a simple yet practical solution for connecting different mounting standards and using photo and video equipment more flexibly.

Package includes one Kupo KS-063 adapter with a 3/8″-16 male thread and a 1/4″-20 female thread.

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