- Part Number: Z-LOSA6228
- EAN: 660132005719
- Manufacturer: Losi
- Product Type: Hardened Setscrews (Grub Screws)
- Thread Size: 5-40 UNC
- Length: 1/8 inch
- Driver Type: Hex Head
- Head Type: Grub
- Material: Hardened Steel
- Colour: Black
- Quantity per Pack: 10
Overview
The LOS Hardened Setscrews, 5-40 x 1/8 inch (10) Z-LOSA6228 are precision fastening components designed for RC car enthusiasts and competitive builders across the UK. Whether you're running a high-performance Losi buggy, truck or truggy, having a reliable supply of OEM replacement setscrews is essential for maintaining your RC model to peak performance standards. These hardened grub screws are engineered to withstand the demands of intense racing, bashing and frequent maintenance cycles that RC cars UK-wide experience in competition and recreational use.
Manufactured by Losi, a globally recognised brand in RC racing and off-road vehicles, these 5-40 x 1/8 inch hardened setscrews deliver the exact specifications your RC model requires for secure component assembly. Setscrews, also known as grub screws, are critical fasteners used throughout RC cars to secure hubs, collars, pulleys, gears and other rotating or fixed components. The hardened steel construction ensures these screws resist stripping, corrosion and mechanical failure even under the high vibration and stress environments that dedicated RC enthusiasts subject their vehicles to during track days, bash sessions and competitive events.
This 10-pack provides sufficient inventory for maintenance, repairs, rebuilds and spare parts stockpiling. RC car owners and builders know that having the correct OEM fasteners on hand prevents project delays and ensures your ready to run RC or custom build performs consistently. Losi parts are trusted across the RC community for quality and fitment accuracy.
Key Features
- Hardened Steel Construction — The screws are manufactured from hardened steel material, which means they deliver superior resistance to stripping, shearing and deformation compared to standard fasteners, making them ideal for the high-vibration environment of RC cars.
- 5-40 Thread Specification — These fasteners feature a 5-40 UNC thread size, which is a standard specification used throughout Losi RC vehicles for securing critical drivetrain and chassis components with precision fit and reliability.
- 1/8 Inch Length — The 1/8 inch length is specifically engineered for applications where shallow fastening depth is required, such as securing small pulleys, hubs, and collar components common in 1/10 scale RC cars and buggies.
- Hex Head Driver Type — The hex head design allows for secure engagement with standard hex key (Allen key) wrenches, providing a reliable grip that resists rounding and slipping during installation and removal, which is essential when working on tight tolerances.
- Grub Screw (Setscrew) Style — Designed as a headless screw with internal hex drive, these components sit flush or recessed in assembled parts, protecting them from damage and allowing for clean, compact assembly geometry in RC model construction.
- Black Colour Finish — The black surface finish provides corrosion resistance and a professional appearance, helping to protect the fasteners from oxidation during storage and use in outdoor RC racing environments.
- 10-Pack Quantity — This convenient 10-pack provides multiple replacement fasteners, allowing builders and racers to maintain spare inventory for quick repairs and maintenance without repeatedly ordering single screws.
- OEM Losi Part — As genuine Losi original equipment manufacturer parts, these setscrews are guaranteed to match the exact specifications and tolerances of your Losi RC vehicle, ensuring perfect fitment and performance.
Technical Performance
The LOS Hardened Setscrews Z-LOSA6228 represent precision engineering at the fastener level, which is critical for maintaining RC car reliability and performance. Manufactured from hardened steel, these 5-40 x 1/8 inch grub screws are engineered to withstand the extreme rotational forces, vibration and mechanical stress that RC cars UK builders and racers encounter during use. The hardened material specification means these fasteners resist the common failure mode of fastener stripping, where the internal hex socket becomes damaged and can no longer grip the hex key, rendering the screw impossible to remove or adjust. This is particularly important in RC applications where frequent maintenance, gear changes, and component adjustments are standard practice. The 5-40 UNC thread specification is a precise metric used throughout Losi's RC vehicle range, ensuring these setscrews will integrate seamlessly into existing assemblies without compatibility issues. The hex head driver type provides the secure engagement necessary for reliable installation and removal cycles, critical when working on vehicles that may be serviced dozens of times throughout their racing season. Whether you're a competitive RC racer maintaining multiple vehicles, a weekend basher keeping your buggy in top condition, or a serious hobbyist building custom RC setups, having genuine OEM setscrews on hand ensures your vehicle assembly remains tight, secure and performing optimally. The black hardened finish offers protection against rust and corrosion, extending the service life of these components even in damp UK storage conditions.
What's in the Box
- 10x LOS Hardened Setscrews, 5-40 x 1/8 inch (Z-LOSA6228)
Frequently Asked Questions
- What are LOS hardened setscrews used for in RC cars? — Hardened setscrews (also called grub screws) are used throughout RC vehicles to secure rotating components such as motor pinions, spur gears, drive shafts, hub carriers and pulleys, as well as to lock fixed components like motor mount collars and suspension geometry adjusters. The setscrew design allows them to sit recessed or flush within assembled parts, protecting them from damage during use.
- Are these setscrews compatible with my Losi RC model? — Yes, these are genuine OEM Losi parts. If your RC car, buggy, truck or truggy specification calls for 5-40 x 1/8 inch hardened setscrews, these Z-LOSA6228 fasteners will provide perfect fitment and performance. Check your Losi vehicle documentation or parts diagram to confirm the correct setscrew specification for your model.
- Why are hardened setscrews better than regular steel fasteners? — Hardened steel setscrews resist stripping of the internal hex socket, a common failure mode in RC applications where frequent assembly, disassembly and adjustment cycles occur. The hardened material also resists shearing under the high rotational forces generated by RC motors and drivetrain components, meaning your fasteners will last longer and remain reliable through many maintenance cycles.
- Can I use these setscrews as replacements for my older Losi vehicle? — As long as your older Losi model specification calls for 5-40 x 1/8 inch setscrews, these parts will work perfectly. Losi maintains consistency across their product range for common fastener specifications, so OEM replacement parts are highly compatible across multiple vehicle models and generations.
- What tools do I need to install these setscrews? — The hex head design requires a standard hex key (Allen key) in the appropriate size. As these are 5-40 fasteners, you'll typically use a very small hex key, usually 1/16 inch or similar. Make sure to use a properly-fitting hex key to avoid rounding the screw head.
- Are these setscrews suitable for beginners? — Yes, these are suitable for all skill levels. Beginners will use them during initial assembly of their RC vehicles, whilst experienced racers and builders will use them for routine maintenance, repairs and component replacement. Understanding where setscrews are used in your vehicle design helps you maintain it properly throughout its service life.
- How many setscrews does a typical RC vehicle use? — The number varies by model, but most 1/10 scale RC buggies, trucks and truggies use multiple setscrews throughout the drivetrain and suspension assembly. Having a 10-pack means you'll have spares for repairs, replacements and rebuilds without running short during a busy racing season.
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 LOS Hardened Setscrews, 5-40 x 1/8 inch (10) Z-LOSA6228 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.
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