Team Corally Steel Screws M4 x 20mm Hex Button Head 10 Pack C-3003-40-20

Overview

The Corally Steel Screws M4 x 20mm Hex Button Head are essential fasteners for anyone serious about RC car maintenance and upgrades. Whether you're building a competition-grade RC buggy, maintaining a trail-crawling rock crawler, or simply keeping your RC car collection in top condition, these precision-engineered steel screws deliver the reliability and durability that serious RC enthusiasts demand. As a UK RC hobbyist, you'll appreciate having quality spare fasteners on hand—they're the kind of consumable part that frequently needs replacing after heavy bashing sessions or competitive racing.

These screws are manufactured to industrial DIN 7380 specifications, ensuring consistency and reliability across every pack. The hex button head design provides excellent grip and visual appeal compared to standard Phillips or slot-head alternatives, making them a popular choice among RC modellers who care about build quality and aesthetics. Supplied in a convenient pack of 10 pieces, these M4 x 20mm fasteners are ideal for securing bodies, mounting components, and assembling custom RC car builds where genuine, quality hardware makes the difference between a reliable runner and a disappointment on the track or trail.

Whether you're upgrading your RC crawler with new axle components, securing body panels on your RC buggy, or building from scratch, having a selection of quality steel screws in your workshop is non-negotiable. The robust construction and precise engineering of these Corally fasteners means they'll stand up to the vibration and stress of RC racing and bashing without stripping, loosening, or failing mid-session.

Key Features

• M4 x 20mm Dimensions — The M4 thread size paired with 20mm length makes these screws suitable for a wide range of RC car applications, from body mounting to suspension component assembly, ensuring you have the right size for most standard RC builds.
• Hex Button Head Design — The distinctive hex button head profile provides superior grip compared to Phillips or slotted alternatives, allowing you to apply consistent torque without risk of cam-out or stripped screw heads, which is critical when working on precision RC models.
• Premium Steel Construction — Built from high-quality steel material, these fasteners resist corrosion, stripping, and deformation even under the extreme vibration and stress encountered in RC racing and off-road bashing, making them far more reliable than cheaper alternatives.
• DIN 7380 Specification — These screws are manufactured to the recognised industrial DIN 7380 standard, guaranteeing consistent quality, precise threading, and compatibility with standard metric tools and pre-drilled holes across all major RC brands.
• Black Finish — The black oxide or plated finish not only protects against corrosion and rust, but also gives these fasteners a professional appearance that complements any RC build aesthetic.
• Pack of 10 Pieces — A practical quantity for hobby builders and racers who need multiple fasteners for a single project or want to keep spares on hand for repairs and maintenance work throughout the season.

Technical Performance

The Corally Steel Screws M4 x 20mm represent solid engineering at an accessible price point for the RC car community across the UK. Built to DIN 7380 industrial specifications, these fasteners feature precise metric M4 threading and a 20mm length that positions them as versatile components suitable for body mounting, suspension assembly, and general RC car construction work. The hex button head design—a hallmark of professional-grade fasteners—offers significant advantages over traditional Phillips or slotted alternatives when working on sensitive RC components where stripping or cam-out could result in damage or project delays. The steel construction ensures these screws maintain their integrity under the extreme vibration, shock loads, and thermal stress that accompany competitive RC racing and aggressive off-road bashing. Whether you're assembling a lightweight 1/10 scale RC buggy, working on a heavier 1/8 scale truggy, or maintaining your collection of ready-to-run RC cars, having access to quality steel fasteners like these is essential for maintaining optimal performance and appearance. The black finish provides both corrosion resistance and aesthetic appeal, ensuring your builds look as professional as they perform.

What's in the Box

• 10x Corally Steel Screws M4 x 20mm Hex Button Head

Frequently Asked Questions

• What are these Corally screws used for in RC car building? — These M4 x 20mm hex button head screws are versatile fasteners suitable for mounting RC car bodies, securing suspension components, assembling chassis upgrades, and general assembly work across most 1/10, 1/8, and larger scale RC vehicles. The hex button head design makes them particularly popular for custom builds where appearance and build quality matter.
• Are these screws suitable for beginners working on RC cars? — Absolutely. These screws are ideal for RC hobbyists of all skill levels. The hex button head design actually makes them easier to use than Phillips screws because they're less prone to cam-out and stripping, making them excellent for anyone learning proper assembly techniques.
• What does DIN 7380 specification mean for these screws? — DIN 7380 is a recognised industrial standard that guarantees precise dimensions, consistent material quality, and reliable threading. This means these Corally screws will fit properly in standard metric holes and won't strip easily, making them far more reliable than non-standard fasteners.
• Why choose hex button head over Phillips or slotted head screws? — Hex button head screws provide superior grip and torque transfer compared to Phillips or slotted alternatives, significantly reducing the risk of cam-out or stripped screw heads. For RC cars where precision and reliability matter, this design is the professional choice.
• Are 10 screws enough for my project? — Ten screws represent a practical quantity for a single project or maintenance session, though RC enthusiasts often keep multiple packs on hand since fasteners are frequently replaced during repair work, upgrades, and seasonal maintenance.
• What is the key size for these hex button head screws? — The manufacturer specifications confirm these are M4 x 20mm hex button head screws, and you'll need the appropriate metric hex key or Allen wrench to install and remove them. Always check your driver size before purchasing to ensure compatibility.

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 CORALLY STEEL SCREWS M4 X 20MM HEX BUTTON HEAD 10 PCS C-3003-40-20 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.