Everything about frame mounting bolts
Short Answer:
Frame mounting bolts connect the skate frame to the boot, affecting stability, performance, and overall durability.
Understanding frame mounting bolts
Frame mounting bolts are a crucial part of your inline skate setup. These bolts hold the frame to the boot, and their quality and fit directly affect your skating experience. In this guide, we’ll dive into everything you need to know about frame mounting bolts, including head diameter, thread size, pitch, length, and tools for installation
Head diameter of your frame mounting bolts: Finding the right Fit
The head diameter of a bolt matters more than you might think. For some frames, like the 50/50 frames, the head diameter must be precise to fit properly. On our website, we list the head diameter for every bolt so you can find the right match for your frame. In general, a head diameter between 10 and 15 millimeters works well. If the head is too small, using a washer can help distribute the pressure evenly and prevent frame damage.
Want to learn more about frame mounting methods? Check out our guide on everything about frame mounting.
Thread size of your mounting bolts: M6 vs. M7
Most skate frames use M6 bolts, which is the standard for mounting frames. However, some brands like FR, Micro, and Fila use M7 bolts, which are slightly larger. To find out which bolt size you need, use a slide gauge to measure the outside diameter of your existing bolts. For example, if the gauge reads around 5.8 mm, you're dealing with an M6 bolt. We list the specific thread sizes for each model on our website, so you can always find the right bolt for your skates.
Length: Why it matters
Bolt length is another important factor. If the bolt is too short, it won’t properly secure the frame. If it’s too long, it can stick out into your boot and cause discomfort, or even injury. For example, skater Brian Shima once bruised his heel because a bolt protruded too far into his boot. If you have a bolt that’s too long, you can cut it down to the right size. Just be sure to place a nut over the thread before cutting it, so you can remove the nut afterward to clean up the thread and make sure it still fits properly.
Thread Pitch: Understanding the details
The pitch of a thread refers to how closely spaced the threads are. Most M6 bolts use a standard pitch, but M7 bolts may vary. We’re working on listing the pitch for all M7 bolts on our website to help you find compatible options. Knowing the pitch is crucial if you need to replace bolts, as the wrong pitch won’t thread properly into your skates.
Tools: Allen vs. torx
Most skates use Allen (hex) bolts, which are common and widely available. However, some aftermarket bolts, like those from Fruit Tech Hardware, use Torx bolts. Torx bolts have more edges, making them more durable and less likely to strip than Allen bolts. If you have Torx bolts, be sure to carry the right tool with you, as most skaters only carry Allen keys.
Want to learn more about the right tools for your skates? Check out our guide on everything about skate tools.
Frame Mounting standards: UFS, 165 mount, and Trinity mount
In the world of frame mounting, there are three main standards: Universal Frame System (UFS), 165 Mount, and Trinity Mount. UFS is the most common for aggressive skating, while the 165 and Trinity mounts are more common in recreational and speed skates. We also have a dedicated video explaining these mounting standards in detail.
Conclusion: Choose the right bolts for your skates
Selecting the right frame mounting bolts ensures your skates perform at their best. The correct size, length, and head diameter contribute to a secure and comfortable fit, while choosing between M6 and M7 bolts ensures compatibility with your frames.
Understanding the details of thread pitch, bolt length, and the tools needed for installation helps prevent issues like stripped bolts or discomfort from protruding hardware. If you're upgrading or replacing bolts, make sure to check their specifications carefully to keep your skates secure and responsive.
For more insights on how mounting systems affect performance, check out our guide on everything about frame mounting or explore different frame options in everything about frame material.