Here’s a professional‑style overview of the Tether Tools Rock Solid 1/4″‑20 to 1/4″‑20 Adapter Spigot (RS617), including its features, specs, use‑cases, and things to watch out for:
Tether Tools Rock Solid 1/4″‑20 to 1/4″‑20 Adapter Spigot (RS617)
What It Is
The RS617 is a small adapter/spigot that has two male 1/4‑20″ threads. It allows you to connect two accessories or parts that both have female 1/4‑20″ sockets. Essentially, it bridges or joins them. It’s part of the Rock Solid line, meaning it's built for durability and professional rigging.
Key Features & Specifications
| Spec | Detail |
|---|---|
| Model | RS617 — “1/4‑20 to 1/4‑20 Adapter Spigot” Polyline Corp |
| Thread Type | Male 1/4‑20″ on both ends (i.e. both are male) Polyline Corp |
| Material | Rock Solid is metal; likely aluminum or similar rugged alloy (typical of Rock Solid adapters) for strength. (Exact metal not explicitly stated in all specs) Design Info+1 |
| Design Feature | Center hex nut or section for easy tightening/wrench grip to lock it securely in place without over‑torquing. Polyline Corp |
| Primary Use | To connect two pieces of gear that both have female 1/4‑20 threads — for example mounting a Case Air under camera, or attaching any 1/4‑20 female accessory together. Polyline Corp |
Use‑Cases / Practical Applications
Mounting accessories: If you have, say, some hot‑shoe mount or rig arm that has a female 1/4‑20 socket, and you want to attach something else that also uses a 1/4‑20 thread, this spigot lets you join them.
Rigging flexibility: Useful when configuring custom rigs where parts don’t directly match (both female) and you need a male‑male bridge.
Mounting small devices: For example, mounting a Case Air tethering device under a camera body using the camera’s bottom 1/4‑20 thread and then connecting the RS617 into that to support the device.
Studio or field setups: Anywhere you need to adapt mount points or extend/move gear around with minimal components.
Strengths & Advantages
Simple yet very versatile: Connects female‑threaded accessories without needing new specialized parts.
Durable build: Rock Solid line typically uses good metal components, so less likely to strip or fail under moderate load.
Compact: Small adapter; adds minimal size and weight. Good for keeping rigs low profile.
Locking via center hex section makes tightening easier and more stable.
Limitations & What to Watch Out For
Load / strength limits: While built tough, a male‑male spigot like this isn’t a heavy load‑bearing part. If you attach something heavy or with leverage, it may loosen or stress threads.
Height & clearance: Adds a small amount of length between the two parts; if space under the camera or rig is tight, this may interfere with other gear or the way the rig balances.
Thread wear risk: Frequent tightening/loosening can wear out threads, especially if over‑torqued or done without alignment.
Metal‑on‑metal contact: Without care, surfaces may scratch or metal may mar; some motion or vibration can lead to loosening (so thread locker or careful torque helps).
Compatibility check: Only useful when both parts have female 1/4‑20 sockets; useless if one or both are different thread sizes, so be sure your gear matches.