- Brand: Losi
- Model Number: Z-LOSA6227
- EAN Code: 660132005702
- Thread Size: 4-40
- Length: 1/8 inch
- Thread Type: Machine
- Head Type: Grub
- Driver Type: Hex Socket
- Material: Hardened Steel
- Quantity: 10 screws per pack
Overview
The Losi 4-40 x 1/8 inch Hardened Set Screws (10) Z-LOSA6227 are precision-engineered fasteners designed for RC enthusiasts who demand reliability and durability in their builds. Whether you're assembling a new RC car UK or maintaining an existing model, these hardened grub screws are essential components that ensure your RC vehicle stays securely fastened during intense driving sessions. As a critical component in any RC hobbyist's toolkit, quality set screws make the difference between a reliable performer and a frustrating experience with loose parts.
These hardened set screws from Losi represent the standard choice for RC model builders across the UK who understand that using manufacturer-approved fasteners is crucial for vehicle longevity and performance. Available in convenient packs of 10, they provide excellent value for builders who regularly service their models or are working on multiple RC projects simultaneously. Whether you're into competitive racing, weekend bashing, or precision building, Losi hardened set screws deliver the consistency and quality that professional and amateur RC enthusiasts alike have come to expect.
The Z-LOSA6227 set screws are manufactured to exacting standards with hardened steel construction, ensuring they maintain their integrity even under the vibrations and stresses inherent in RC driving. These grub screws are an ideal spare part to keep on hand, and they work seamlessly with a wide range of Losi RC models and components. For anyone serious about maintaining their RC collection in top condition, having a supply of quality hardened set screws is simply good practice.
Key Features
- Hardened Steel Construction — The screws are manufactured from hardened steel material, which provides superior strength and resistance to stripping, ensuring they remain reliable even after repeated use and removal cycles typical in RC hobby work.
- 4-40 Thread Size — These screws feature a 4-40 machine thread specification, a standard sizing common across many Losi RC components, making them universally compatible with numerous models in the Losi range.
- 1/8 Inch Length — The compact 1/8 inch length makes these set screws suitable for applications where space is limited, providing secure fastening without requiring extended threaded lengths that could interfere with nearby components.
- Grub Head Design — Also known as socket head cap screws or set screws, the grub head design features a recessed socket that accepts a hex wrench driver, allowing for secure, flush fastening that sits flush with the component surface.
- Hex Socket Driver Type — The hex socket design means you can apply torque precisely using standard hex wrenches, preventing the fastener head from protruding and reducing the risk of accidental loosening or damage during assembly and disassembly.
- Pack of 10 — Each pack contains ten individual screws, providing excellent value and ensuring you have spares for maintenance, repairs, or building multiple models without needing to order repeatedly.
- Machine Thread Specification — The machine thread design cuts into prepared holes cleanly and precisely, making installation straightforward and ensuring consistent, reliable clamping force across multiple fastening applications.
Technical Performance
The Losi 4-40 x 1/8 inch Hardened Set Screws Z-LOSA6227 represent a fundamental but absolutely critical component in RC vehicle assembly and maintenance. Constructed from hardened steel, these fasteners are engineered to withstand the repeated vibrations, thermal cycling, and dynamic stresses that are inevitable in RC driving. The hardened steel composition ensures that the screw threads maintain their integrity across multiple assembly and disassembly cycles, something that is crucial for RC hobbyists who regularly service their models or swap components between different vehicles. The 4-40 thread specification aligns with industry-standard sizing for small-scale RC components, making these screws compatible with a vast range of Losi parts and accessories. The 1/8 inch length is carefully calculated to provide adequate thread engagement without creating protrusion issues that could interfere with moving parts or adjacent components. The hex socket head design provides a clean, compact appearance whilst enabling precise application of torque through standard hex wrenches. This design reduces the likelihood of fastener slip-out during tightening and loosening operations, which is particularly important when working with hardened fasteners that require controlled torque application. Whether you're performing routine maintenance on your RC models, building a complete vehicle from the chassis up, or keeping emergency spares on hand, these hardened set screws deliver the engineering quality that Losi is recognised for throughout the RC community.
What's in the Box
- 10x Losi 4-40 x 1/8 inch Hardened Set Screws (Grub Head, Hex Socket)
Frequently Asked Questions
- What are 4-40 set screws used for in RC models? — 4-40 set screws are precision fasteners used throughout RC vehicles to secure components including servo horns, suspension parts, motor mounts, electronics enclosures and countless other assemblies. The 4-40 specification is a standard sizing in the RC hobby, and having quality hardened versions ensures your components stay securely fastened during driving without working loose from vibration.
- Why choose hardened set screws over standard versions? — Hardened set screws offer superior resistance to stripping and deformation, which means they can be repeatedly tightened and loosened without losing their holding power. This is particularly valuable for RC hobbyists who regularly service their models, swap components, or perform maintenance checks. Standard screws may strip after just a few assembly cycles, but hardened versions maintain their integrity indefinitely with proper care.
- Are these compatible with all Losi RC models? — The 4-40 x 1/8 inch specification is a standard fastener size used across many Losi models and components. However, you should verify compatibility with your specific model by consulting the instruction manual or checking the fastener specifications for your particular vehicle. These screws work with any component that requires a 4-40 machine thread fastener of 1/8 inch length.
- What does the hex socket driver type mean? — The hex socket design means these are set screws with a recessed hexagonal socket in the head, allowing you to apply torque using a standard hex wrench or hex driver tool. This design provides a clean, flush appearance and reduces the risk of fastener slip-out compared to slotted or Phillips head alternatives, making assembly and disassembly more reliable.
- How many screws will I need? — Each pack contains ten screws, which is typically sufficient for several complete assemblies or ongoing maintenance tasks. Many RC builders like to keep multiple packs on hand to ensure they never run short during a building session or when performing emergency repairs at the track or field.
- Can I use these screws with non-Losi components? — Yes, provided the component requires a 4-40 machine thread fastener of 1/8 inch length. The 4-40 specification is an industry-standard sizing used across the RC hobby by multiple manufacturers, so these hardened set screws offer versatility beyond just Losi-branded components.
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, 4-40 x 1/8 inch (10) Z-LOSA6227 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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- 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.
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- 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.
