Overview
The Fastrax M4 Purple Flanged Locknuts are essential replacement hardware components designed for RC car enthusiasts and builders across the UK. These precision-engineered fasteners are specifically manufactured to M4 specification with a distinctive purple anodised finish that makes them instantly recognisable during maintenance and assembly work. Whether you're maintaining your RC crawler, monster truck, or competition-grade off-road buggy, having quality locknuts in your spares box is a fundamental requirement for reliable performance and vehicle safety.
As an RC hobbyist in the UK, you'll understand the importance of using proper-quality replacement parts from established manufacturers like Fastrax. These flanged locknuts are engineered to resist vibration and prevent fasteners from loosening during intense RC off-road driving. The pack contains four pieces, giving you multiple applications or ensuring you have spares when you need them most. This product is ideal for anyone building, modifying, or maintaining their RC vehicle collection, from casual weekend bashers to serious competitors who demand reliability and consistency in every component.
Fastrax has established itself as a trusted supplier of RC parts and accessories within the hobby community, and these locknuts represent the kind of quality hardware that serious RC car UK enthusiasts rely upon. The purple colour coding helps you quickly identify and organise your fastener collection, making workshop organisation and vehicle assembly significantly more efficient. Whether you're replacing worn fasteners on a rock crawler tackling technical terrain or maintaining a high-speed monster truck, these M4 purple flanged locknuts deliver the secure, vibration-resistant fastening solution your RC vehicle deserves.
Key Features
- M4 Thread Specification — These locknuts are precisely engineered to M4 metric specification, ensuring perfect compatibility with M4 bolt sizes commonly used throughout RC vehicles and making them a versatile addition to your spares collection.
- Flanged Design — The flanged construction increases the contact area with the mounting surface, distributing load more effectively and providing enhanced resistance to loosening caused by vibration during off-road RC driving.
- Locking Mechanism — Built with an integral locking feature, these nuts resist vibration-induced loosening, which is critical during intense RC off-road driving where constant terrain impacts and dynamic forces could otherwise cause fasteners to gradually work loose.
- Purple Anodised Finish — The distinctive purple colour coating provides both aesthetic appeal and practical identification benefits, allowing you to quickly locate and organise these fasteners within your workshop or tool collection.
- Pack of Four Units — This convenient four-piece pack gives you multiple fasteners for a single project or ensures you have spares readily available when maintenance or repairs are needed during your RC hobby sessions.
- Fastrax Quality — Manufactured by Fastrax, a recognised supplier of reliable RC parts and accessories, these locknuts meet the quality standards expected by serious RC car UK enthusiasts and competition builders.
Technical Performance
These M4 purple flanged locknuts represent precision hardware engineering designed specifically for the demanding requirements of RC vehicle assembly and maintenance. The M4 thread specification aligns with industry-standard fastener sizing used across numerous RC platforms, from entry-level ready-to-run vehicles to competition-grade off-road buggies and crawlers. The flanged design is not merely decorative—it serves a critical engineering function by increasing the bearing surface area between the nut and the component being fastened. This enhanced contact area distributes clamping forces more evenly, reducing stress concentrations and improving the overall structural integrity of fastened joints. The locking mechanism integrated into the nut's design employs proven vibration-resistance engineering principles. During RC off-road driving, constant impacts from terrain features, rapid acceleration and deceleration, and the inherent vibration from motors and drive systems create dynamic forces that continuously challenge fastener security. Traditional locknuts without locking features can gradually loosen over extended use, potentially leading to component failure or safety issues. These Fastrax locknuts incorporate design features specifically engineered to counteract these forces. The purple anodised finish serves multiple practical purposes beyond mere aesthetics. Anodising is an electrochemical process that creates a protective oxide layer on the metal surface, enhancing corrosion resistance—particularly important for RC vehicles that may encounter muddy terrain, water crossings, or coastal environments. The vibrant purple colour also provides excellent visibility during assembly and maintenance work, reducing the likelihood of losing small fasteners and improving workshop organisation when managing extensive spares collections.
What's in the Box
- 4x Fastrax M4 Purple Flanged Locknuts
Frequently Asked Questions
- What is an M4 flanged locknut and why would I need it for my RC car? — An M4 flanged locknut is a fastener designed to prevent loosening caused by vibration. The flanged design increases contact surface area, whilst the locking mechanism resists loosening during RC off-road driving where constant impacts and vibration are present. These are essential replacement parts if you're maintaining or rebuilding RC vehicles.
- Are these locknuts compatible with all RC vehicles? — These M4 metric fasteners are compatible with any RC vehicle using M4 bolt holes. According to the source, they are specifically listed as compatible with the FTX5539 FTX Carnage 2.0 Brushless RTR Monster Truck, though their universal M4 specification makes them suitable for many other RC car platforms using M4 fastener sizing.
- What does the purple colour indicate? — The purple anodised finish serves practical and aesthetic purposes. It makes these fasteners instantly recognisable in your workshop, helping with organisation and identification. The anodising process also provides a protective coating against corrosion, which is beneficial if your RC vehicle operates in damp or muddy conditions common in UK off-road environments.
- Why is the flanged design important? — The flanged design increases the bearing surface area between the nut and the mounting surface. This distributes clamping force more evenly, reduces stress concentration, improves joint integrity, and enhances vibration resistance—all critical factors for maintaining secure fastening during demanding RC driving conditions.
- How many locknuts do I get in this pack? — This pack contains four M4 purple flanged locknuts, providing sufficient fasteners for a single major assembly or ensuring you have spare parts available for maintenance and repairs.
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 Purple Flanged Locknuts (4PCS) FTM4PUF 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.
- Manufacturer: Fastrax
- Model Number: FTM4PUF
- Product Code: FTM4PUF
- EAN: 5055323909702
- Nut Type: Locking Flanged
- Size: M4
- Colour: Purple
- Pack Contents: 4 pieces
- Compatible With: FTX5539 FTX Carnage 2.0 Brushless RTR Monster Truck
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
