ARRMA Button Head Screw Flanged M4x18mm Black Steel Pack of 10 Z-ARA721418

• Brand: ARRMA
• Part Number: Z-ARA721418
• EAN: 5052127046404
• Product Type: Button Head Screw Flanged
• Thread Type: Machine Thread
• Head Type: Button Head
• Diameter: M4 (4mm)
• Overall Length: 18mm
• Driver Type: Hex Socket
• Finish: Black
• Material: Steel
• Pack Contents: 10 x M4 x 18mm Flanged Button Head Screws
• Compatible With: ARRMA KRATON 6S EXB 4X4 RTR Speed Monster Truck (C-ARA8708V6T1)
• Deep Hex Socket: Yes (improved driver engagement)

Overview

The ARRMA BUTTON HEAD SCREW FLANGED M4x18mm V2 Z-ARA721418 is an essential replacement part for RC enthusiasts across the UK who demand reliability and precision in their hobby-grade vehicles. These high-quality button head screws are specifically engineered to provide the perfect fit and consistent performance that serious RC car owners expect, whether you're maintaining a competition-grade machine or keeping your weekend basher in top condition. As an authorised ARRMA parts supplier, RC Model Shop stocks genuine replacement components that ensure your RC truck, buggy, or other vehicle maintains factory-standard performance and durability.

Whether you're an experienced RC racer preparing your 1/8 scale RC monster truck for competition or a weekend enthusiast performing routine maintenance, having quality replacement fasteners on hand is essential. The ARRMA BUTTON HEAD SCREW FLANGED M4x18mm V2 delivers the precision engineering you'd expect from ARRMA's OEM parts range. These screws are specifically compatible with popular ARRMA models like the KRATON 6S EXB 4X4 RTR Speed Monster Truck, making them an ideal choice for owners of these vehicles who need reliable replacement parts. The flanged button head design offers advantages over standard fasteners, and the precision-manufactured threads ensure consistent fit every time you service your RC car.

If you're building an RC collection or maintaining multiple vehicles, stocking these quality replacement screws means you'll never be caught short during a service session. Available to order from RC Model Shop with free mainland UK delivery on orders over £99, these genuine ARRMA parts represent excellent value for money at just £5.69 per pack.

Key Features

• Strong and Durable Steel Construction — These button head screws are manufactured from high-quality steel that provides long-lasting performance, resisting corrosion and wear even with frequent use and servicing of your RC car in UK outdoor conditions.
• Precision Manufactured Threads — The threads are engineered with precision to ensure consistent fit and fast servicing, which means less frustration during maintenance and guaranteed compatibility with your ARRMA RC vehicle's designated mounting points.
• Flanged Button Head Design — The flanged button head configuration provides a larger bearing surface than standard fasteners, distributing load more effectively and reducing the risk of the fastener pulling through soft materials during assembly or vibration.
• Deep Hex Driver Engagement — The deep hex socket provides improved driver engagement, meaning your hex key will seat firmly in the fastener and reduce the likelihood of stripping the head during installation or removal, keeping your tools and fasteners in perfect condition.
• M4x18mm Metric Specification — The M4 diameter with 18mm overall length makes these fasteners ideal for use across ARRMA's range of RC vehicles, from small-scale buggies to larger monster trucks where this size fastener is specified in the design.
• Machine Thread Type — The machine thread specification ensures these screws work perfectly with threaded inserts and pre-drilled holes common in RC vehicle chassis and suspension components, providing reliable assembly every time.
• Pack of 10 Fasteners — Each pack includes 10 individual screws, giving you enough spares for multiple service sessions or the ability to stock your RC workshop and always have replacements on hand.

Technical Performance

The ARRMA BUTTON HEAD SCREW FLANGED M4x18mm V2 represents precision engineering applied to RC fasteners. At M4 diameter with 18mm overall length, these screws are dimensioned to meet ARRMA's specification for critical assembly points on their range of RC vehicles. The black finish provides both aesthetic consistency with ARRMA's design language and practical corrosion resistance. The flanged button head design is a sophisticated engineering solution that offers multiple advantages over standard socket head cap screws: the integrated flange acts as a washer, spreading the clamping load over a larger surface area, which is particularly important in RC applications where vibration and repeated assembly cycles are common. The precision-manufactured machine threads ensure that fasteners seat consistently, providing repeatable assembly torque and reliable holding power across multiple service cycles. For owners of the KRATON 6S EXB 4X4 RTR Speed Monster Truck and other compatible ARRMA models, using genuine OEM fasteners ensures that your RC car maintains its original performance characteristics and reliability. Whether you're servicing after a weekend of intense bashing or performing pre-competition checks on your RC monster truck, these fasteners deliver the quality and consistency that competitive and recreational RC enthusiasts demand.

What's in the Box

• 10 x M4 x 18mm Flanged Button Head Screws (black, machine thread, hex socket drive)

Frequently Asked Questions

• What are flanged button head screws used for in RC cars? — Flanged button head screws are used throughout RC vehicle construction for critical assembly points where you need a low-profile fastener head (that's what the button head design provides) combined with the load distribution benefits of an integral flange. The flange acts like a built-in washer, spreading clamping force over a larger area, which is especially important in RC applications where vibration and repeated assembly are common. These screws are commonly found securing chassis plates, suspension arms, and body mount points on RC trucks and buggies.
• Are these genuine ARRMA parts? — Yes, these are genuine ARRMA OEM replacement parts, identified by the official ARRMA part number Z-ARA721418. When you purchase from RC Model Shop, you're buying authentic components engineered and tested by ARRMA for perfect compatibility with their RC vehicles. Using genuine ARRMA parts ensures your vehicle maintains warranty coverage and performs exactly as the manufacturer intended.
• What size hex key do these screws use? — These button head screws feature a hex socket drive that accepts a standard metric hex key. The deep socket design ensures superior engagement with your hex key bit, reducing the risk of stripping during installation or removal, which is a common frustration with cheaper fasteners.
• Which ARRMA vehicles are these compatible with? — These M4x18mm flanged button head screws are specifically listed as compatible with the KRATON 6S EXB 4X4 RTR Speed Monster Truck. However, they may also fit other ARRMA models that use this fastener size in their design. If you're uncertain whether these screws are compatible with your specific RC vehicle, we recommend checking your model's manual or contacting our expert team at RC Model Shop.
• How many screws come in each pack? — Each pack contains 10 individual M4x18mm flanged button head screws, giving you plenty of spares for routine maintenance and servicing across multiple RC vehicles or multiple service sessions on a single vehicle.
• Why should I choose flanged button head screws over standard socket head cap screws? — The flanged design offers several advantages: the integrated flange distributes clamping load over a larger surface area, reducing the risk of fasteners pulling through soft materials; the low-profile button head sits flush with many RC components; and the deep hex socket provides superior driver engagement. For precision engineering-focused builders and racers, the flanged button head design is a superior choice for RC applications.
• Are these screws suitable for outdoor RC bashing? — Yes, these steel screws are designed for the demanding conditions of RC vehicle operation. The steel construction resists corrosion, and the precise engineering ensures they maintain their holding power through the vibration and repeated stress cycles that come with regular RC bashing, whether you're on UK grass, tarmac, or mud.

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 SCREW FLANGED M4x18mm V2 Z-ARA721418 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.