Overview
The FTX Grub Set Screws M4 X 4mm (FTX-SS021) are essential fastening components designed for RC enthusiasts who demand quality and reliability in their hobby builds. Whether you're maintaining an RC car UK enthusiast's collection, repairing a brushless RC buggy, or assembling a custom rock crawler setup, these precision grub screws provide the secure fastening solution you need. FTX is a recognised manufacturer in the RC hobby community, and these replacement screws ensure you have the right spare parts on hand for any maintenance or assembly work.
Grub screws, also known as set screws, are vital components in RC vehicle construction and repair. They're used to secure components such as motor shafts, wheel hubs, suspension arms, and various mechanical assemblies where a flush, headless fastening solution is required. The M4 X 4mm specification makes these screws compatible with a wide range of FTX RC models and general RC applications where metric fastening is standard. For anyone serious about their RC hobby, having a supply of quality grub screws is essential for reliable performance and quick repairs.
Available now at RC Model Shop, the FTX Grub Set Screws M4 X 4mm represent an affordable way to ensure you're never caught without the right fasteners. Whether you're a weekend basher, a dedicated racer, or someone just getting into the world of RC vehicles, having spare parts like these on hand means less downtime and more time enjoying your RC experience. These screws are ideal for use across the entire FTX model range and are equally suitable for other RC brands requiring M4 fastening solutions.
Key Features
- M4 Metric Size — The M4 specification ensures compatibility with a vast range of RC vehicles and components, making these versatile screws suitable for multiple applications across different RC brands and model ranges used throughout the UK RC community.
- 4mm Length — The 4mm length is precisely engineered to match the fastening requirements of FTX RC models, ensuring proper engagement without over-threading or leaving insufficient bite on components.
- Grub Screw Design — The headless grub screw design allows for flush installation where components meet, eliminating protruding screw heads that could interfere with moving parts, cause snagging, or compromise the aesthetic of your RC vehicle.
- Set Screw Functionality — Grub screws function as set screws, meaning they're specifically designed to hold components firmly in place through direct surface contact rather than relying on a head for clamping, making them ideal for shaft and hub applications.
- OEM Quality — As an official FTX product, these screws meet the same quality standards used in factory-assembled FTX RC vehicles, ensuring reliability and consistent performance across your builds.
- Essential Spare Parts — Whether you're replacing lost fasteners, building a custom setup, or maintaining your collection of RC cars UK-wide, having genuine OEM screws available means you're never limited by missing hardware.
Technical Performance
The FTX Grub Set Screws M4 X 4mm represent precision fastening engineering designed to meet the demanding requirements of modern RC vehicles. The M4 metric specification indicates a 4mm nominal diameter with a standard metric thread pitch, making these screws compatible with the tapped holes and threaded inserts found throughout FTX RC models. The 4mm length is carefully calculated to provide sufficient engagement depth for secure fastening without bottoming out in shallow holes or creating over-stress on components. Grub screws are engineered to transmit clamping force through a contact point rather than through a head mechanism, making them particularly valuable in RC applications where space is limited or where flush mounting is critical. The headless design means there's no protruding fastener head to interfere with rotating components, suspension movement, or wheel clearance — essential considerations when working with high-speed RC buggies, crawlers, and performance vehicles. These screws are precision-manufactured to maintain consistent tolerances, ensuring that multiple screws can be fitted to critical assemblies with confidence that they'll perform uniformly. Whether you're working on electric RC cars or maintaining high-performance models, the reliability of proper fastening directly impacts vehicle longevity and safety during operation.
What's in the Box
- FTX Grub Set Screws M4 X 4mm (multiple pieces)
Frequently Asked Questions
- What are grub screws used for in RC vehicles? — Grub screws, also called set screws, are headless fasteners used to secure components that need flush mounting, such as motor shafts to pinion gears, wheel hubs to axles, and suspension components where a protruding screw head would interfere with movement or performance.
- Are these screws compatible with my FTX RC model? — The M4 X 4mm specification is designed for use across the FTX RC range, but compatibility depends on your specific model's fastening requirements. Check your FTX model's documentation or spare parts list to confirm M4 grub screws are specified for your vehicle.
- How many screws are included in this pack? — The source documentation does not specify the exact quantity in each pack. Contact RC Model Shop directly for information about pack size and bulk purchasing options if needed.
- Can I use these screws with other RC brands? — Yes, the M4 X 4mm metric specification is a standard fastening size used across the entire RC industry. These screws can be used with any RC vehicle requiring M4 grub screws, whether FTX or other brands.
- What's the difference between grub screws and regular bolts? — Grub screws have no head and use a socket (typically hex or slotted) for installation, allowing them to sit flush with or below the surface of components. Regular bolts have heads that protrude, making them unsuitable for applications requiring flush mounting.
- How do I install a grub screw? — Grub screws are installed using an appropriate socket or screwdriver bit (the socket type is determined by the screw design) into a pre-drilled tapped hole. Tighten firmly to secure the component, taking care not to strip the threads.
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 FTX GRUB SET SCREW M4 X 4MM FTX-SS021 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.
- Product Type: Grub Set Screws
- Metric Size: M4
- Length: 4mm
- Brand: FTX
- Model Number: FTX-SS021
- Fastener Type: Headless set screw
- Thread Type: Metric ISO standard
- Installation: Socket or screwdriver bit required
- Application: Motor shaft securing, wheel hub fastening, suspension component assembly, general RC vehicle fastening
- Compatibility: FTX RC models and metric M4 threaded applications across RC brands
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.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- 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.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- 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.
