Traxxas Shoulder Screws M3x10mm Black with Threadlock Pack of 6 TRX3966

Overview

The Traxxas Shoulder Screws 3x10mm (6 pcs) with threadlock (TRX3966) are essential replacement fasteners for RC car enthusiasts and serious hobbyists across the UK. These precision-engineered screws are OEM Traxxas parts designed to fit a wide range of Traxxas RC models, making them indispensable for anyone maintaining or upgrading their RC car collection. Whether you're a seasoned competitor running race-spec RC buggies, a weekend basher pushing your RC monster truck to the limit, or an RC enthusiast building your first high-performance model, having quality replacement hardware in your spares box is crucial for keeping your hobby moving forward.

Shoulder screws serve a critical function in RC vehicle assembly and maintenance. Unlike standard fasteners, these specialised screws feature a precisely engineered shoulder (the unthreaded section between the head and the threaded portion), which provides accurate spacing and alignment in mechanical assemblies. This makes them perfect for pivot points, suspension components, and other critical areas where exact positioning matters. The inclusion of threadlock compound means you can install these screws with confidence, knowing they will stay securely fastened even during aggressive driving or off-road bashing, without the additional step of applying separate threadlock fluid.

At RC Model Shop, we stock genuine Traxxas parts because we understand that quality replacement components are just as important as the main vehicle itself. The TRX3966 shoulder screws are manufactured to Traxxas' exacting standards, ensuring perfect fitment and reliable performance across countless RC car UK models and generations.

Key Features

• M3 Size with 10mm Length — These shoulder screws feature M3 machine thread sizing and a total length of 10mm, making them compatible with a broad range of Traxxas suspension components, drivetrain parts, and mechanical assemblies where this specific dimension is required.
• Hex Driver Type — The hex socket design allows for precise installation and removal using standard hex wrenches or hex driver tools, ensuring you can work on your RC car with minimal risk of stripping the screw head or damaging the surrounding components.
• Machine Thread Construction — These are machine thread screws rather than wood or self-tapping types, meaning they cut clean, precise threads into pre-drilled holes for a professional finish and reliable clamping force in your RC model's mechanical systems.
• Pre-Applied Threadlock — Each screw comes with factory-applied threadlock compound, eliminating the need to purchase separate threadlock fluid and simplifying your assembly and maintenance workflow. This ensures vibration resistance and prevents fasteners from loosening during high-impact driving conditions.
• Black Finish — The black oxide finish provides excellent corrosion resistance and a professional appearance that matches other Traxxas hardware, whilst protecting the steel from rust and oxidation during storage or when exposed to moisture during water crossings or wet weather RC car sessions.
• Pack of Six — Six screws per pack gives you enough fasteners to complete most common maintenance jobs or to keep spares on hand for future projects and repairs.

Technical Performance

These Traxxas shoulder screws represent precision engineering at its finest. The M3 specification delivers the exact fastening size needed for critical suspension pivot points, drivetrain components, and chassis-mounted elements across multiple Traxxas model ranges. The 10mm length provides the proper stand-off distance for components that require accurate spacing without interference. The machine thread design ensures that when installed into pre-tapped holes, the screws create reliable, repeatable clamping force that won't shift or settle under the constant vibration and shock loads experienced during RC car driving. The hex socket head design is standard across professional RC car maintenance and allows for even torque distribution when tightening, which is essential for suspension geometry that needs to remain perfectly aligned. The pre-applied threadlock compound is engineered to resist vibration without causing permanent bonding, meaning you can still remove and reinstall these screws for future maintenance without excessive force or risk of damaging the fastener. The black finish is more than cosmetic—it provides a protective oxide layer that resists corrosion from sweat, dirt, and environmental exposure that RC cars encounter during outdoor use across the UK.

What's in the Box

• Traxxas Shoulder Screws 3x10mm — 6 pieces
• Factory pre-applied threadlock compound on each screw

Frequently Asked Questions

• What are shoulder screws and why does my RC car need them? — Shoulder screws are specialised fasteners with an unthreaded shoulder between the head and the threaded portion. This shoulder provides precise spacing and acts as a bearing surface when components pivot or rotate relative to each other. In RC cars, they're used in suspension pivot points, drivetrain connections, and steering linkages where accurate alignment and smooth operation are essential. Unlike regular bolts, the shoulder prevents components from bottoming out or misaligning, which is critical for maintaining suspension geometry and driveability.
• What does threadlock mean and why is it included? — Threadlock is a compound (typically a mild adhesive) applied to the threads of fasteners to prevent them from loosening due to vibration. RC cars experience constant vibration and shock loading during driving, which can cause standard fasteners to gradually loosen and fall out. By pre-applying threadlock to these screws, Traxxas saves you a step in maintenance and ensures the fasteners stay secure during driving. The threadlock used on genuine Traxxas parts is a removable grade, meaning you can still disassemble components in the future without extraordinary effort.
• Are these screws compatible with my Traxxas RC model? — These M3x10mm shoulder screws are used across many Traxxas model ranges. They're commonly found in suspension components, drivetrain assemblies, and steering systems. However, specific compatibility depends on your exact model. If you're unsure, we recommend checking your model's spare parts diagram or getting in touch with our RC Model Shop team who can confirm fitment for your particular vehicle.
• Can I use these screws without threadlock? — These screws come pre-treated with threadlock, so they're ready to use as-is. If you prefer to work with them without threadlock for some reason, you could clean the threads before installation, but this isn't recommended for RC car use where vibration-induced loosening is a real concern. The threadlock adds minimal installation difficulty whilst providing significant reliability benefits.
• What tools do I need to install these screws? — These screws use a hex socket head (also called an Allen head), so you'll need a hex wrench or hex driver of the appropriate size. The specific hex size isn't detailed in the specification, so consulting your model's manual or asking our team can help ensure you have the right tool. Always use the correct size tool to avoid stripping the socket.
• How many screws do I need? — This pack contains six screws, which is typically enough for a single maintenance job or component assembly. Depending on your model and what you're working on, you might need one, two, or more screws. Having spare packs on hand is a smart idea for serious RC hobbyists who tackle multiple projects or maintain multiple vehicles.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the Traxxas Shoulder screws, 3x10mm (6 pcs) (with threadlock) TRX3966 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.