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        The Maible HSDWGJ1235 is a heavy‑duty self‑drilling screw designed for fast, secure fixing of timber or metal to metal — indoors or outdoors. Supplied as a 100‑piece jar and featuring a corrosion-resistant galvanised finish, coarse thread, hex‑drive head and integrated neoprene washer, these screws deliver strong hold, weather resistance and reliable sealing — ideal for roofing, cladding, metal framing or general construction tasks.

        Key Features

        • Self‑Drilling Design – Built-in drill‑point makes pre‑drilling unnecessary when fastening metal to metal or metal to timber — speeds installation
        • 12G × 35 mm Size – Compact yet strong, suitable for light‑ to medium‑duty fixings and penetrations through thin metal sheeting or light framing
        • Galvanised Finish – Provides corrosion resistance, enabling internal and external use including exposed roof or wall installations
        • Hex‑Drive Head – Allows secure, high‑torque driving and reduces cam‑out during installation
        • Neo‑Washer Seal – Integrated neoprene washer helps seal the screw hole for weatherproof, water‑resistant fastening — ideal for roofing and external cladding
        • Coarse Thread – Provides strong grip in softer substrates such as timber, as well as in sheet metal when self‑drilling

        Specifications

        • Model: HSDWGJ1235
        • Thread Size: 12G (approx. 5.5 mm outer diameter)
        • Screw Length: 35 mm (total)
        • Head Type: Hex head suitable for hex‑drive driver bits
        • Washer: Neoprene sealing washer included
        • Finish / Coating: Galvanised (zinc‑plated) for rust resistance
        • Pack Quantity: 100 screws per jar
        • Applications: Internal and external fixing of light metal sheeting, metal‑to‑timber, metal framing, roofing, cladding, guttering, etc.

        Applications

        • Fixing metal roof sheeting or wall cladding to metal purlins or timber battens
        • Attaching guttering, fascia, or downpipes to metal or timber frames
        • Light-duty metalwork — joining metal frames, supports, enclosures
        • Timber‑to‑metal connections in sheds, carports, garages and workshops
        • Indoor carpentry or light structural framing where corrosion resistance and sealing are beneficial

        With a galvanised, self‑drilling design and sealing washer included, the Maible HSDWGJ1235 offers a simple and effective fastening solution for metal and timber applications. Its easy installation, corrosion resistance, and reliable hold make it a valuable addition to any installer or contractor’s toolkit.

        Q. Do I need to pre‑drill before using these screws?
        A. No — the self‑drilling tip is designed to penetrate thin metal or timber and drill its own pilot, so pre‑drilling is usually not required.

        Q. Are these screws suitable for outdoor use?
        A. Yes — the galvanised coating and neoprene washer provide corrosion resistance and water sealing, making them suitable for external use in roofing, cladding or gutter applications.

        Q. What driver bit do I need?
        A. Use a standard hex‑drive bit (size matching the screw head) to ensure proper torque and avoid cam‑out.

        Q. Can I use them in hardwood or thick metal?
        A. They are best suited for thin metal sheeting, light framing or timber substrates; for harder or thicker materials, a longer or heavier‑duty fastener may be necessary.

        Q. Is the neoprene washer permanent?
        A. Yes — the washer remains in place under compression, creating a weather‑resistant seal around the screw head when properly installed.

        All products must be installed by a licensed electrican. DIY electrical work is illegal and very dangerous.

        Change of Mind
        All products purchased from MJS Electrical Products & Supplies are backed by a thirty (30) day Peace of Mind Return Policy. All products returned must be in perfect unused condition, with all components, complete with original packaging. We will not allow returns on damaged or incomplete products. Proof of purchase is required. Should the product not be in original condition, please contact us before returning it as this may save you some unnecessary costs.

        Damaged / Faulty Goods
        If you find that the goods were damaged in transit or were faulty in some manner, please contact us within 24 hours of receiving the goods. We will organise for the return of the goods and arrange a credit towards your next purchase or send a replacement product. Customer will incur the cost of return postage and be credited the purchase price only. We recommend that you return your unwanted items using registered post or trackable courier. We can not be held responsible if returned items are lost in transit.

        Warranties
        Product warranties are governed by the respective manufacturers and / or suppliers warranty terms and conditions (available on request). We will not be liable to you or any third party for any loss suffered due to product failure. We will process product warranty claims through the respective manufacturers and/or suppliers. All warranties are void if the product is not installed by a licensed electrician.

        PRODUCT INFO
        SKU HSDWGJ1235
        Model # HSDWGJ1235
        Barcode # 5061079190806
        Brand Maible
        SHIPPING INFO
        Shipping Weight 0.7510kg
        Shipping Width 0.065m
        Shipping Height 0.115m
        Shipping Length 0.065m