- Brand: Losi
- Model Number: Z-LOS-3821
- Product Type: Flat Point Set Screws
- Metric Size: M4x4mm
- Quantity: 10 pieces
- EAN: 0660132689896
- Recommended Retail Price: £8.99
Overview
The Losi Flat Point Set Screws M4x4mm (10) Z-LOS-3821 are essential replacement fasteners for RC enthusiasts maintaining and servicing their Losi RC models. Whether you're a dedicated RC car UK hobbyist, a competitive racer, or someone who enjoys weekend bashing with their brushless RC vehicle, having a reliable supply of quality set screws is crucial for keeping your model in peak condition. These flat point set screws are precision-engineered components designed to secure various parts on your RC model, from motor mounts to chassis fittings, ensuring everything stays exactly where it should be during intense driving sessions.
Set screws are among the most frequently replaced components in any RC car UK collection, as they can become loose, damaged, or lost during maintenance and repairs. The Losi brand is renowned throughout the RC hobby for manufacturing high-quality spare parts and upgrades that meet the exacting standards expected by both casual enthusiasts and serious competitors. This pack of ten M4x4mm flat point set screws gives you multiple replacements, ensuring you always have spares on hand when you need them most. Whether you're building a new Losi RC model from scratch or maintaining an existing one, these set screws are an indispensable addition to your spare parts inventory.
Flat point set screws differ from other fastener types in that they feature a flat, squared-off tip rather than a rounded or conical point. This design provides excellent grip and holding power, making them ideal for applications where you need secure, reliable fastening without the risk of slipping. For anyone invested in RC cars UK and the broader world of remote control vehicles, understanding the importance of quality fasteners like these can mean the difference between smooth, trouble-free operation and frustrating downtime caused by loose fittings.
Key Features
- M4x4mm Specification — These set screws are precisely sized at M4 diameter with 4mm length, making them compatible with standard Losi RC model mounting points and chassis fittings throughout their vehicle range. The correct sizing ensures a perfect fit and reliable holding power without the need for adaptors or modifications.
- Flat Point Design — The flat point configuration provides superior grip and engagement compared to rounded or conical alternatives, delivering exceptional holding strength that resists loosening during aggressive driving, jumps, and rough terrain. This makes them especially valuable for brushless RC cars that generate high power and vibration.
- Pack of Ten — This generous ten-piece pack ensures you have multiple spare fasteners on hand for your RC hobby projects, repairs, and maintenance work. Having extras means you're never left waiting for replacements when you need to service your model.
- Losi Quality Engineering — Manufactured by Losi, a trusted name in RC car UK circles and worldwide, these set screws meet the brand's stringent quality standards for reliability and performance. You can trust that these are genuine Losi components engineered to work perfectly with your RC models.
- Essential Maintenance Component — Set screws are among the most commonly needed spare parts for any RC enthusiast, making this pack a smart purchase for your spares box and maintenance supplies alongside other RC car UK replacement items.
Technical Performance
The Losi Flat Point Set Screws M4x4mm represent precision engineering at its finest, designed specifically to meet the demanding requirements of modern RC car UK enthusiasts. The M4x4mm dimension refers to the 4mm metric diameter of the screw shaft combined with the 4mm overall length, providing the perfect size for securing components on Losi RC vehicles without interfering with moving parts or creating clearance issues. The flat point design is a critical engineering feature that ensures maximum surface contact with the receiving component, distributing clamping force evenly and preventing the screw from rotating or slipping once tightened. This is particularly important in brushless RC applications where high power delivery and rapid acceleration can generate significant vibration and stress on all fastened components. The hardened steel construction typical of quality set screws ensures durability and resistance to stripping, even when subjected to repeated tightening and loosening cycles during maintenance and repair work. Whether you're working on a high-speed brushless RC car, an off-road crawler, or any Losi model in your collection, these set screws provide the secure, reliable fastening you need for worry-free operation.
What's in the Box
- Losi Flat Point Set Screws M4x4mm — 10 pieces
Frequently Asked Questions
- What are flat point set screws used for in RC models? — Flat point set screws like these M4x4mm fasteners are used throughout RC cars UK to secure various components in place, including motor mounts, servo horns, chassis fittings, and other critical parts. The flat point design grips the receiving component firmly, preventing rotation and loosening even under the vibration and stress generated by brushless RC cars and aggressive driving conditions.
- Why would I need replacement set screws for my Losi RC model? — Set screws are among the most frequently replaced components in any RC hobby because they can become loose, damaged, stripped, or lost during regular maintenance, repairs, and driving sessions. Having a pack of ten spare M4x4mm set screws means you're always prepared for maintenance work without needing to wait for additional supplies.
- How do flat point set screws compare to other fastener types? — Flat point set screws provide superior holding power compared to rounded or conical alternatives because their squared-off tip creates maximum surface contact with the receiving component. This design is especially valuable for brushless RC applications where vibration and high power output could cause other fastener types to loosen.
- Are these genuine Losi parts? — Yes, the Z-LOS-3821 is an official Losi part number, guaranteeing that you're purchasing genuine components engineered and manufactured to Losi's exact specifications and quality standards, ensuring perfect compatibility with your Losi RC models.
- What size tool do I need to install these set screws? — Set screws typically require a hex driver or Allen key that matches the socket in the screw head. You should refer to your specific Losi model's instruction manual or service guide to determine the exact driver size needed for these M4x4mm set screws.
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 Flat Point Set Screws M4x4mm (10) Z-LOS-3821 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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