Fastrax M4 Black Flanged Locknuts RC Car Hardware Pack of 4 FTM4BKF

Overview

The Fastrax M4 Black Flanged Locknuts (4PCS) FTM4BKF are essential hardware components designed for RC car enthusiasts throughout the UK who demand reliability and quality in their builds. Whether you're running an FTX trophy truck, a brushless monster truck, or any other RC vehicle that utilises M4 fasteners, these premium locknuts deliver the performance and durability you need. Fastrax is a recognised manufacturer of high-quality RC spare parts and upgrades, trusted by hobby enthusiasts who take their RC car maintenance seriously.

These flanged locknuts represent a significant upgrade over standard fasteners. The M4 size makes them compatible with an extensive range of popular RC models, including the FTX Apache, FTX Banzai, FTX Bugsta, FTX Carnage series, FTX Crossbow, FTX Ramraider, FTX Vantage, FTX Zorro, and Maverick vehicles. If you've ever experienced a nut coming loose during a run and causing frustration in the field, these locking nuts are the solution you've been looking for. The pack contains four nuts, providing enough hardware for typical drivetrain and suspension applications on your RC ready to run or custom-built vehicle.

What sets these locknuts apart from basic fasteners is their construction and design philosophy. Built from aluminium and finished in black, they combine lightweight properties with functional aesthetics. The flanged design means you won't need to source additional washers, saving you money and simplifying your build. The locking mechanism ensures that once tightened, your fasteners stay secure through hours of bashing, racing, or crawling—regardless of whether you're running a brushless electric RC car on the roads or taking a brushed crawler across rough terrain.

Key Features

• M4 Thread Size — Compatible with a huge range of RC vehicles including FTX trophy trucks, monster trucks, buggies, and the Maverick Strada platform, making these nuts a versatile choice for any serious RC enthusiast in the UK.
• Aluminium Construction — Manufactured from aluminium rather than steel, these locknuts keep your RC car lightweight whilst maintaining the strength and reliability needed for demanding driving conditions and frequent use.
• Black Finish — The sleek black colour provides a professional appearance and matches perfectly with black wheels and modern RC car aesthetics, giving your build a coordinated, finished look.
• Flanged Design — The flanged head eliminates the need for separate washers, reducing the number of components you need to stock and simplifying assembly when building or maintaining your RC vehicle.
• Locking Mechanism — These are genuine locking nuts, meaning they won't vibrate loose during operation like standard fasteners can, providing peace of mind during intense driving sessions or racing.
• Pack of Four — Four nuts per pack give you enough hardware for typical RC car applications, whether you're securing suspension components, drivetrain parts, or other critical fastening points.

Technical Performance

The Fastrax M4 Black Flanged Locknuts represent quality engineering focused on solving real problems that RC car enthusiasts face. The locking feature is particularly important for RC applications, where vibration from motors, impacts, and rough terrain can cause standard nuts to loosen over time. User feedback confirms that these perform significantly better than basic budget fasteners—one experienced builder noted that cheap 5p nuts don't lock properly and can cause serious problems, whilst these Fastrax locknuts hold securely without requiring additional components like nyloc washers. The aluminium construction keeps weight to a minimum, which is crucial when you're optimising your RC car's performance and handling characteristics. The flanged design provides a wider bearing surface than standard nuts, distributing loads more effectively and reducing the chance of components pulling through. These nuts have proven compatibility with numerous FTX models ranging from 1/10 scale trophy trucks and monster trucks to buggies and truggy trucks, as well as other brands' vehicles using M4 fasteners. The black anodised finish resists corrosion and maintains its appearance through multiple seasons of use, whether you're running your RC car in dry conditions or in muddy, wet British weather.

What's in the Box

• 4 x M4 Black Flanged Locknuts

Frequently Asked Questions

• Are these locknuts suitable for all RC cars and trucks? — The M4 size makes these compatible with a wide range of RC vehicles, particularly FTX models including the Apache, Banzai, Bugsta, Carnage, Crossbow, Ramraider, Vantage, and Zorro platforms, as well as Maverick vehicles. If your RC car uses M4 fasteners, these nuts will work. Always check your specific model's requirements before purchasing.
• Why should I upgrade from standard nuts to locking nuts? — Standard fasteners can vibrate loose during RC car operation, potentially causing parts to separate and creating safety hazards or damage. Locking nuts feature a mechanism that prevents this loosening, keeping your vehicle secure throughout driving sessions. User reviews confirm they hold much better than budget alternatives and eliminate the need for additional washers.
• Do I need washers with these flanged nuts? — No—the flanged design on these locknuts incorporates a wider head that serves the function of a washer, distributing load across a larger area. This saves you money on additional hardware and simplifies your build process.
• What's the advantage of aluminium construction over steel? — Aluminium offers a lighter weight alternative to steel whilst maintaining sufficient strength for RC applications. Since reducing weight improves acceleration, handling, and overall performance on RC vehicles, aluminium fasteners are preferred by builders optimising their setups. The trade-off is minimal since these fasteners aren't subjected to extreme stresses.
• How many locknuts do I need? — This pack contains four nuts, which is typically sufficient for common suspension and drivetrain applications. Depending on your specific setup and modifications, you may need additional packs for a complete build.
• Are these black locknuts available in other colours? — These Fastrax locknuts come in black finish. If you require different colours to match your RC car's aesthetic, you should check with your retailer for alternative options.

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 Fastrax M4 Black Flanged Locknuts (4PCS) FTM4BKF 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.