- Brand: Losi
- Model Number: Z-LOS235012
- EAN: 605482623756
- Product Type: Set Screw (Grub Screw)
- Pack Contents: 10 pieces
- Thread Size: M4
- Engagement Length: 3mm
- Head Type: Grub (headless)
- Point Type: Cup Point
- Thread Type: Machine Thread
- Driver Type: Hex Socket
- Colour: Black
- Compatible Vehicles: Losi 1/6 Super Baja Rey SBR 2.0 4WD Brushless Desert Truck RTR (Yellow) C-LOS05021T1
- Compatible Vehicles: Losi 1/6 Super Baja Rey SBR 2.0 4WD Brushless Desert Truck RTR (Blue) C-LOS05021T2
Overview
The Losi Set Screw M4 x 4mm Cup Point (10) Z-LOS235012 is an essential spare parts component designed specifically for Losi RC vehicles, particularly the 1/6 Super Baja Rey SBR 2.0 4WD Brushless Desert Truck. These precision-engineered grub screws are critical fastening elements that every serious RC enthusiast should have in their spare parts collection. Whether you're maintaining your RC car UK or performing routine maintenance and repairs, these set screws provide the reliable mechanical fastening you need to keep your Losi vehicle performing at its best.
Set screws, also known as grub screws, are headless fasteners with a recessed hex socket that are commonly used in RC vehicles to secure components such as motor shafts, drive shafts, and other rotating or fixed elements. The M4 x 4mm specification indicates these screws have a 4mm diameter thread and a 3mm engagement length, making them perfectly sized for medium-duty fastening tasks on larger-scale RC models. The cup point design features a concave tip that seats securely into a prepared dimple or indentation on the shaft or surface being fastened, providing superior grip and preventing slippage during operation.
Available in a convenient pack of 10 units, these black machine-threaded fasteners are an affordable way to ensure you always have replacement set screws on hand when building, rebuilding, or maintaining your Losi brushless RC desert truck or compatible models. For anyone serious about keeping their ready to run RC vehicle in top condition, stocking spare set screws is a wise investment that can save you time and frustration when repairs or adjustments are needed.
Key Features
- M4 x 4mm Specification — These set screws feature a 4mm diameter thread size with a 3mm engagement length, making them perfectly proportioned for fastening applications on 1/6 scale RC vehicles and other medium-duty RC components where secure, reliable fastening is essential.
- Cup Point Design — The concave cup-shaped tip seats precisely into a corresponding dimple on the shaft or surface, creating a secure mechanical grip that resists loosening during high-vibration conditions and intense off-road driving, which is critical for desert truck performance.
- Hex Driver Socket — Each screw features a recessed hexagonal socket that accepts standard hex wrenches or drivers, allowing for quick installation and removal without the need for specialised tools, making maintenance and repairs straightforward even in the field.
- Black Machine Thread Construction — These are genuine machine-threaded set screws (not self-tapping), meaning they require a pre-threaded hole for installation, providing clean, professional fastening suitable for precision RC components and ensuring proper engagement without damage to surrounding materials.
- Pack of 10 Units — Each pack contains 10 individual set screws, providing sufficient spares for multiple repairs, replacements, or complete vehicle builds, ensuring you're never caught short during maintenance sessions or competition days.
- Losi OEM Genuine Parts — These are authentic Losi original equipment manufacturer components, guaranteeing perfect compatibility with your Losi RC vehicles and delivering the same quality and precision you expect from factory components.
Technical Performance
The Losi Set Screw M4 x 4mm Cup Point screws represent precision fastening engineering designed specifically for the demanding requirements of 1/6 scale brushless RC desert trucks. The M4 thread diameter provides excellent load-carrying capacity whilst remaining lightweight, which is important in RC vehicles where every gram counts toward performance and handling characteristics. The 3mm length (engagement length) is specifically engineered to work with the existing threaded holes and mechanical interfaces found in Losi Super Baja Rey SBR 2.0 and compatible models. The cup point design creates a concentrated contact point that provides superior holding power compared to flat-point alternatives, crucial for applications where shafts experience rotational forces and vibration during high-speed desert running. The black finish provides corrosion resistance and durability, important for maintaining mechanical integrity when your RC vehicle encounters moisture, dust, and challenging off-road environments. These machine-threaded screws deliver the reliability and precision fastening that serious RC enthusiasts demand, whether you're performing routine maintenance on your ready to run RC truck or undertaking complete drivetrain rebuilds.
What's in the Box
- 10x Losi Set Screws M4 x 4mm Cup Point
Frequently Asked Questions
- What is a set screw and why do I need spare ones for my RC vehicle? — Set screws, also called grub screws, are headless fasteners used to secure shafts, gears, and other components within RC vehicles. They're frequently loosened or lost during intense off-road driving, maintenance, or component replacement, which is why having spare M4 set screws is essential for any RC enthusiast with a Losi desert truck or similar model.
- Which Losi vehicles are these set screws compatible with? — These M4 x 4mm cup point set screws are specifically designed for the Losi 1/6 Super Baja Rey SBR 2.0 4WD Brushless Desert Truck in both the yellow and blue colour variants. They may also be compatible with other Losi 1/6 scale models that use M4 fastening points, but compatibility should always be confirmed before purchasing.
- What's the difference between cup point and flat point set screws? — Cup point set screws, like these, feature a concave tip that seats into a prepared dimple on the target surface, providing superior grip and preventing slippage under rotational forces. Flat point alternatives don't create this concentrated contact and are better suited for applications where the screw needs to be removable without leaving marks. Cup points are preferred for permanent or long-term fastening on RC vehicles.
- Do I need pre-threaded holes to use these set screws? — Yes, these are machine-threaded set screws (not self-tapping), so they require pre-drilled and pre-threaded holes for installation. They cannot be driven directly into untapped metal or plastic; the receiving component must have matching M4 internal threads prepared beforehand.
- Are these genuine Losi OEM parts? — Absolutely. These set screws are authentic Losi original equipment manufacturer components, ensuring perfect fit, finish, and compatibility with your Losi RC vehicles and delivering the same quality standards as factory-installed fasteners.
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 Losi Set Screw M4 x 4mm Cup Point(10) Z-LOS235012 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:
- 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.
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