- Product Type: Lock Nut Flanged Serrated
- Manufacturer: Losi
- Model Number: LOS235015
- Nut Size: M5 x 0.8
- Pitch: 0.8mm
- Nut Type: Locking Flanged
- Design: Serrated
- Finish Colour: Silver
- Pack Contents: 10 individual nuts
- Flange Style: Yes
- Thread Profile: Metric M5
Overview
The Losi Lock Nut Flanged M5 x 0.8 Serrated (10) is an essential fastening component designed for RC enthusiasts who demand reliability and precision in their builds. Whether you're upgrading your RC car UK setup, maintaining a competition-grade machine, or simply restocking your spare parts drawer, these flanged lock nuts are engineered to keep your RC chassis secure during intense driving sessions. The serrated design provides exceptional grip and prevents vibration-induced loosening, making them an indispensable upgrade for any serious RC model enthusiast.
Manufactured by Losi, a recognised leader in the RC hobby industry, these lock nuts feature a distinctive flanged design that distributes pressure more effectively than standard nuts. This pack contains 10 individual nuts, giving you multiple replacement units and the flexibility to upgrade several areas of your RC vehicle simultaneously. Whether you're building a ready to run RC car or customising your existing machine, having quality fasteners on hand ensures your model stays securely assembled during both casual weekend bashers and competitive racing sessions.
For UK RC enthusiasts, reliability is paramount, and these Losi lock nuts deliver exactly that. The serrated flanged construction means you can tighten them with confidence, knowing they will resist loosening even under the vibration and stress of high-speed driving. These nuts are suitable for a wide range of Losi RC vehicles and compatible platforms, making them a versatile addition to any RC hobbyist's parts collection.
Key Features
- Flanged Design — The integrated flange on these nuts creates a larger bearing surface that distributes clamping force more evenly across the component being fastened, reducing the risk of surface damage and improving overall assembly security compared to standard lock nuts.
- Serrated Surface — The serrated texture provides exceptional grip and resistance to vibration-induced loosening, which is critical in RC cars where constant acceleration, deceleration, and impacts create continuous vibration that can cause ordinary fasteners to work loose over time.
- M5 x 0.8 Specification — These nuts are precisely machined to M5 metric specifications with 0.8mm pitch threading, ensuring perfect compatibility with Losi RC vehicles and other similarly-threaded applications throughout the RC hobby.
- Pack of 10 — This convenient pack includes ten individual lock nuts, providing multiple spares for maintenance, replacement and upgrades across different areas of your RC build without requiring separate purchases.
- Silver Finish — The silver-coloured finish provides a clean, professional appearance whilst offering basic corrosion resistance, maintaining the aesthetic quality of your RC model whilst performing its functional role.
- Losi Quality — As an official Losi component, these lock nuts meet the manufacturer's rigorous quality standards and are engineered to perform reliably in demanding RC applications where equipment failure simply isn't an option.
Technical Performance
These M5 x 0.8 serrated flanged lock nuts represent precision engineering designed specifically for the demands of RC car driving. The flanged design is not merely cosmetic—it serves a critical functional purpose by increasing the bearing surface area, which reduces stress concentration on the fastened component and prevents the nut from sinking into softer materials like plastic and composite parts commonly used in RC chassis construction. The serrated surface treatment creates micro-locking action through mechanical interference, working alongside the threaded connection to resist loosening. This dual-action security system is far superior to standard smooth-finish lock nuts, making these nuts particularly valuable for critical suspension points, steering linkages, and driveshaft connections where any movement could affect handling and performance. The 0.8mm pitch threading is a standard metric specification that ensures compatibility with the vast majority of M5 fastener applications across Losi RC vehicles and similar hobby-grade RC cars. Whether you're driving on-road, off-road, on loose terrain, or high-grip surfaces, these nuts will maintain their clamping force through countless driving sessions, reducing the frequency of maintenance checks and the risk of mid-run failures that could damage your investment.
What's in the Box
- 10 x Lock Nut Flanged M5 x 0.8 Serrated (silver finish)
Frequently Asked Questions
- What is the purpose of a flanged lock nut in RC cars? — Flanged lock nuts are essential for RC car builds because the flange creates a larger bearing surface that prevents the nut from sinking into plastic and composite chassis materials. This is particularly important in RC vehicles where suspension arms, steering linkages, and other critical components are often made from nylon or carbon fibre rather than metal, and a standard lock nut can gradually deform these materials under vibration. The flanged design distributes the clamping force more evenly, protecting your RC model's components whilst maintaining secure fastening.
- How do serrated lock nuts prevent loosening? — The serrated or ridged surface on these lock nuts creates a mechanical locking action through friction and interference. As you tighten the nut, the serrations dig slightly into the surface of the component being fastened, creating resistance to rotation. This works in conjunction with the threaded connection itself, providing a two-stage security system that is much more effective than smooth-finish nuts, especially in applications subject to constant vibration like RC vehicles.
- Are these M5 nuts compatible with my Losi RC car? — M5 x 0.8 fasteners are used across a broad range of Losi RC vehicles, particularly in suspension, steering, and drivetrain assemblies. However, compatibility depends on your specific model. If your Losi RC car originally used M5 fasteners, these lock nuts will be a direct upgrade providing superior vibration-resistance. We recommend checking your vehicle's manual or contacting our expert team at RC Model Shop if you're unsure about compatibility with your particular model.
- Can I use these lock nuts to replace damaged or loosened fasteners? — Absolutely. These lock nuts are ideal replacements for any standard M5 x 0.8 fasteners that have become loose or damaged. In fact, upgrading from smooth nuts to flanged serrated lock nuts is an excellent maintenance decision that will improve your RC car's reliability and reduce future loosening issues, making them a worthwhile investment even if you're simply restocking your spare parts.
- How many nuts do I need for a typical RC car? — A 1/10 scale RC car typically uses M5 fasteners in suspension mounting points, steering linkages, and drivetrain components—often requiring 8 to 15 nuts depending on the specific model and configuration. This pack of 10 provides a practical quantity for rebuilding one area of your RC car or maintaining a spare parts inventory for multiple vehicles.
- Is this suitable for beginners? — Yes, absolutely. These are simple, straightforward fastening components suitable for builders of all experience levels. Whether you're assembling a ready to run RC car kit or maintaining an existing model, lock nuts are among the easiest components to install and understand, requiring only basic tools like an Allen key and screwdriver depending on your vehicle's design.
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 Lock Nut Flanged M5 x 0.8 Serrated (10) 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.
We want to make sure your delivery goes smoothly, so here are some important details about our service:
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