Fastrax M3 Red Nyloc Flanged Locknuts Pack of 4 FASTM3R

Overview

The Fastrax M3 Red Locknuts are essential fastening components designed for RC car enthusiasts and builders across the UK who demand quality hardware for their models. Whether you're upgrading your RC car UK setup, maintaining your ready to run RC vehicle, or fine-tuning a competition-grade crawler, these premium red locking nuts provide secure, reliable fastening that won't vibrate loose during intense driving sessions. Each pack contains four precision-engineered M3 red nyloc locknuts, manufactured by Fastrax—a brand trusted by RC hobbyists for dependable performance parts and upgrades.

These locknuts are specifically designed to complement modern RC vehicles and crawler platforms, offering both functional security and aesthetic appeal. The distinctive red colour coordinates beautifully with custom build projects, allowing you to maintain a professional, colour-coordinated appearance throughout your RC model. Whether you're building a scale crawler, upgrading suspension components, or replacing worn fasteners on your existing RC truck or buggy, these M3 red locknuts deliver the reliability that serious RC enthusiasts expect from quality hardware.

Fastrax has established itself as a go-to supplier for RC parts and accessories, and these red locking nuts exemplify the attention to detail that sets quality RC hardware apart from generic fasteners. The inclusion of the nyloc locking mechanism ensures that your critical fastening points remain secure even under the demanding conditions of off-road RC driving, competitive events, or aggressive bashings.

Key Features

• Nyloc Locking Mechanism — The integrated nylon insert creates a secure grip that prevents fasteners from loosening due to vibration, impact, or continuous operation, which is essential for maintaining the structural integrity of your RC vehicle during intense driving conditions.
• M3 Thread Size — This standard metric thread size makes these locknuts compatible with a wide range of RC hardware, suspension components, and body mounting points across various RC vehicle types and scales.
• Vibrant Red Colour — Beyond aesthetics, the distinctive red finish helps you identify locking fasteners at a glance during maintenance and repairs, whilst also allowing you to create cohesive colour-coordinated custom builds that look professional and intentional.
• Flanged Design — The flanged nut head provides increased surface area for gripping and distributing load, reducing the likelihood of stripped threads or overtightening whilst ensuring secure fastening on aluminium and composite RC chassis materials.
• Premium Fastrax Quality — These locknuts are manufactured to the exacting standards Fastrax customers have come to expect, ensuring consistent thread quality and reliable performance across the entire pack of four nuts.
• Pack of Four — With four locknuts included per pack, you receive enough fasteners for typical RC suspension upgrades, body mounting applications, or replacement of existing worn fasteners on your RC model.

Technical Performance

The Fastrax M3 Red Locknuts represent a fundamental yet crucial component in RC vehicle assembly and maintenance. These metric M3 locknuts are precision-manufactured with a flanged design that distributes clamping force more effectively than standard nuts, reducing the risk of surface damage when tightening fasteners into softer materials common in RC chassis and suspension components. The nyloc insert—a nylon ring embedded within the nut—creates significant resistance as the bolt or screw passes through, creating a locking action that prevents vibration-induced loosening. This is particularly important in RC applications where constant acceleration, deceleration, and directional changes create continuous vibration that can cause inadequately fastened components to gradually loosen over time. The red powder-coated finish provides both visual identification and corrosion resistance, protecting the base metal whilst maintaining the professional appearance of your build. These locknuts are particularly valuable when upgrading or customising RC crawlers, scale trucks, and off-road buggies, where suspension reliability directly impacts handling and safety. The M3 thread pitch makes these nuts compatible with standard metric fastener systems used across most modern RC platforms, from entry-level bashers to competition-grade vehicles.

What's in the Box

• Four Fastrax M3 Red Nyloc Locknuts

Frequently Asked Questions

• What does nyloc mean and why should I choose nyloc locknuts for my RC car? — Nyloc stands for nylon-locking, referring to a small nylon insert inside the nut that creates friction and prevents the fastener from vibrating loose. This is essential for RC vehicles because constant vibration from driving, suspension movement, and impacts can cause standard nuts to gradually loosen, potentially leading to component failure. Nyloc locknuts are the preferred choice for serious RC builders and competitors who want reliable, secure fastening that lasts.
• Are these M3 locknuts compatible with my RC crawler or truck? — The M3 thread size is a standard metric fastener size widely used across RC vehicles, crawlers, and off-road buggies for suspension components, body mounts, and hardware upgrades. These locknuts will fit any RC vehicle that uses M3 fasteners, making them highly versatile for both replacement and upgrade applications. Check your vehicle's fastener specifications or existing bolts to confirm M3 compatibility.
• Can I reuse nyloc locknuts multiple times? — Nyloc locknuts can typically be reused several times before the nylon insert loses effectiveness, though manufacturers generally recommend replacement if the nut spins freely without creating locking resistance. The red colour of these Fastrax locknuts makes it easy to identify and monitor the condition of your fastening hardware during maintenance and repairs.
• What is the difference between these flanged locknuts and standard locknuts? — Flanged locknuts feature an integrated wide washer-like base that provides increased bearing surface, distributing clamping force more effectively and reducing the likelihood of the nut sinking into softer materials. This design is particularly beneficial in RC applications where chassis materials, suspension arms, and body panels are often made from aluminium, composite, or plastic that can be damaged by concentrated fastening pressure.
• Why would I need replacement locknuts for my RC vehicle? — Locknuts can become damaged or worn through repeated tightening and loosening during maintenance, component replacement, or upgrades. The nylon insert can also wear out over extended use, reducing the locking effectiveness. Keeping spare M3 locknuts like these allows you to quickly replace fasteners during maintenance without delaying your RC activities.

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 M3 Red Locknuts (4PCS) FASTM3R 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.