- Brand: ARRMA
- Model Number: Z-ARA721422
- EAN: 5052127032346
- Part Type: Hardware
- Accessory Type: Fasteners
- Category: Button Head Screws
- Head Type: Button Head
- Thread Type: Machine Thread
- Driver Type: Hex Socket
- Screw Size: M4 (Metric 4mm Diameter)
- Length: 22mm
- Material: Steel
- Colour: Black
- Quantity per Pack: 4
- Compatible Vehicles: ARRMA 1/8 KRATON 6S EXB 4X4 RTR Speed Monster Truck, ARRMA 1/5 Outcast 4X4 8S BLX EXB Brushless Stunt Truck
Overview
The ARRMA Button Head Hex Machine Screws M4x22mm are essential replacement fasteners for RC enthusiasts and serious hobbyists who demand reliability and precision from their equipment. Whether you're maintaining your ARRMA RC car, repairing damage from a high-speed bash session, or undertaking routine maintenance on your ready to run RC model, these professional-grade screws are the perfect solution. As an authorised ARRMA stockist, RC Model Shop supplies genuine OEM parts that guarantee compatibility and performance with your RC vehicle.
Button head screws are a staple in RC engineering because they offer a clean, compact profile that reduces snag points and provides excellent aesthetic appeal. The M4x22mm specification makes these screws ideal for a range of ARRMA vehicles, from the high-performance 1/8 KRATON 6S EXB to the massive 1/5 Outcast 4X4 8S BLX Brushless Stunt Truck. Having a pack of quality replacement fasteners on hand means you're always prepared for the unexpected, whether you're racing competitively or enjoying casual weekend bashing on UK terrain.
These screws represent the attention to detail that separates professional RC builders from casual users. When you choose ARRMA genuine parts, you're investing in the longevity and reliability of your RC hobby investment.
Key Features
- Strong and Durable Steel Construction — These button head hex machine screws are manufactured from high-quality steel that resists corrosion and maintains structural integrity even under the extreme stresses of high-powered RC vehicles. Steel fasteners provide the strength necessary to reliably secure components on vehicles that experience constant acceleration, braking, and impact forces.
- Precision Manufactured Threads — Each screw features precision-engineered threads that ensure a consistent fit every single time. This precision manufacturing means you'll never struggle with stripped threads or misaligned fasteners, allowing you to complete repairs and maintenance quickly and confidently without guesswork or frustration.
- Button Head Configuration — The button head design offers a compact, flush profile that minimises snagging and catching on track obstacles or terrain. This sleek design also provides excellent visual appeal, keeping your RC model looking professional and finished. Button heads are far less likely to catch on grass, dirt, or vegetation during off-road running.
- M4 x 22mm Hex Socket — The metric M4 diameter with 22mm overall length specification makes these screws compatible with a wide range of ARRMA models. The hex socket head accepts standard hex keys, making installation and removal straightforward without requiring specialist tools or adapters.
- Pack of Four Screws — Each pack contains four replacement screws, giving you multiple fasteners for different repair jobs or allowing you to keep spares in your RC toolkit for future maintenance sessions.
Technical Performance
These button head hex machine screws represent ARRMA's commitment to engineering excellence in RC parts manufacturing. The M4 diameter provides substantial holding power whilst remaining lightweight — a critical balance in RC design where every gram affects performance and battery runtime. The 22mm length positions these screws as versatile fasteners suitable for mid-range applications across the ARRMA range, from securing suspension components to fastening body panels and drivetrain elements. The precision-manufactured threads ensure that each screw seat correctly within threaded holes, preventing the vibration-induced loosening that can occur with inferior fasteners during high-speed running. The steel material offers excellent fatigue resistance, meaning these screws maintain their integrity through countless cycles of tightening, loosening, and re-tightening that characterise regular RC maintenance. Whether you're running a street-legal RC car on tarmac or pushing your vehicle through muddy off-road terrain, these fasteners are engineered to stay put and perform reliably.
What's in the Box
- 4 x M4 x 22mm Button Head Hex Machine Screws
Frequently Asked Questions
- Which ARRMA RC models are these screws compatible with? — These M4x22mm button head hex machine screws are compatible with a wide range of ARRMA vehicles. Confirmed compatibility includes the ARRMA 1/8 KRATON 6S EXB 4X4 RTR Speed Monster Truck and the ARRMA 1/5 Outcast 4X4 8S BLX EXB Brushless Stunt Truck. If you own an ARRMA RC model and are unsure about compatibility, contact our experienced team at RC Model Shop who can advise you based on your specific vehicle.
- Are these genuine ARRMA parts? — Yes, these are genuine OEM ARRMA fasteners supplied direct from the manufacturer. As an authorised ARRMA dealer, RC Model Shop only stocks authentic parts that meet ARRMA's strict quality standards and engineering specifications. Genuine parts ensure perfect fit and long-term reliability.
- What size hex key do I need for installation? — These button head hex machine screws feature a hex socket head, and you'll need an appropriately-sized hex key to install and remove them. For M4 button head screws, a standard hex key sized to fit the socket will be required — most RC toolkits include a range of hex keys that will accommodate these fasteners.
- Why should I choose button head screws over other fastener types? — Button head screws offer several advantages over flat head, pan head, and other fastener designs. The compact button profile reduces snagging on track obstacles, vegetation, and terrain whilst maintaining excellent visual appearance. They're less likely to catch and cause suspension hang-ups, and they provide a more professional, finished look to your RC model. For RC applications where every millimetre matters, button heads are often the preferred choice.
- Should I keep spare screws in my RC toolkit? — Absolutely. Whether you're a competitive RC racer or a casual weekend basher, having spare fasteners on hand is essential. These screws are inexpensive insurance against the downtime that comes from lost or damaged fasteners during maintenance or after impacts. A pack of four is ideal for keeping one set installed and having spares available for future repairs.
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 ARRMA Button Head Hex Machine Screws, M4x22mm (4) Z-ARA721422 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.
- 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.
