Really Right Stuff B102 - 3/8"-16 UNC round head screw with hex socket

Really Right Stuff B102, 3/8"-16 UNC round head screw with hex socket for precise photo applications

Right in the middle of setting up a tripod, you often only then realize how much depends on such a small screw. The Really Right Stuff B102, a 3/8"-16 UNC round head screw with hex socket, is made exactly for this moment: inconspicuous, but absolutely crucial when you want to fasten your camera or head reliably without fiddling around every time or making compromises.

We see this screw as a specialized solution for photographers and filmmakers who are not just looking for any photo-thread screw, but for a precisely manufactured custom part with a cleanly cut 3/8" UNC thread and a well-thought-out round head design. In short: a small component that feels surprisingly significant in everyday use.

Made in the USA, precision custom part for 3/8" UNC photo threads

The B102 comes from the production of Really Right Stuff, that is, from an environment where we expect very high manufacturing quality and tight tolerances. The screw is designed as a custom part for 3/8" UNC photo threads and thus fits typical tripod heads, quick-release bases, camera plates or adapters that rely on this standard thread.

Thanks to the clean 3/8"-16 UNC thread, the screw can be screwed in firmly without binding or wobbling. Especially if you change components frequently, for example between video head, ball head and leveling half ball, a precisely manufactured thread pays off because it wears out less quickly and avoids cross-threading.

Round head with hex socket, compact, grippy, unobtrusive

The head of the B102 is designed as a round head. This may not look spectacular at first glance, but it is quite practical in everyday use: the round head is less likely to snag on bags, straps or cables and sits flush in the base. With a maximum head diameter of about 14.5 mm, the screw remains compact enough to fit into tighter recesses or countersunk holes.

The integrated hex socket allows you to tighten it in a controlled manner with the included 7/32" hex key. This lets you tighten the screw significantly more firmly and evenly than would be possible with a coin or your fingers. This is a real advantage, especially with heavier setups—large telephoto lenses, video rigs, sliders—because the connection is less likely to come loose.

Thought-out dimensions, suitable for many tripod heads and camera plates

The B102 is deliberately kept compact without being too short. The overall length is about 14.8 mm, which makes it versatile without protruding excessively from the mount. Of this, around 10.6 mm accounts for the length without the head, while the actual thread length is about 5.6 mm.

This combination of overall length, thread length and head diameter ensures that the screw sits cleanly in many typical photo and video components: in tripod plates, bases, adapters or special brackets. It is long enough to grip securely but short enough not to stick out annoyingly on the other side. Especially with precisely milled parts, this is more important than you might think.

Hex key included, ready for immediate use

So that you don’t have to rummage through your toolbox first, the B102 comes with the correct key size included: the scope of delivery includes a 7/32" hex key. That may sound like a small detail, but in practice it makes a difference when you are on the go or want to reconfigure quickly.

This allows you to tighten the screw cleanly without using improvised tools that could damage the hex socket profile. Anyone who has ever had to remove a stripped screw from a plate knows how helpful it is to have a matching key from the start.

Robust solution for demanding photo and video setups

In everyday practice, the Really Right Stuff B102 round head screw is a robust, no-nonsense solution for anyone who does not want to equip their gear with random standard parts. It is suitable for use on tripod heads, quick-release plates, camera bases, video platforms and similar components where a 3/8" UNC photo thread is required.

We would particularly recommend it if you value repeatable, play-free connections and do not want to readjust every time because something has come loose. The combination of custom manufacture, clean 3/8" UNC thread, round head and hex socket makes the B102 a small but very useful component in your setup—one of those parts that you install once and then leave alone for a long time because it just works.