Hex Head Self Drilling Screw with EPDM Washer

DIN7504K Hex Head Self Drilling Screws with Neoprene Rubber EPDM Bonded Washer – High-Performance Fasteners for Industrial and Construction Applications

Engineered for durability, efficiency, and superior performance in demanding environments, the DIN7504K hex head Self-Drilling Screws with bonded EPDM rubber washers are a premium solution for metal-to-metal fastening across global markets. These high-grade fasteners combine precision engineering with corrosion-resistant materials, making them ideal for both commercial and industrial installations worldwide. Whether you're constructing steel buildings, installing roofing systems, or assembling structural components, this product delivers unmatched reliability and ease of use.

Designed to meet international standards including DIN, ISO, and GB specifications—along with custom non-standard options—these screws offer flexibility for diverse applications. Available in diameters ranging from M2 to M64 (1/4" to 2"), they accommodate various load-bearing requirements. The stainless steel composition includes grades such as SS304, SS316, A2, and A4, ensuring excellent resistance to rust, chemical exposure, and extreme weather conditions. With a monthly supply capacity of up to 500 metric tons and a minimum order quantity of 1 ton, these fasteners are suitable for both small-scale projects and large-scale manufacturing needs.

Key features include a sharp drill point that eliminates the need for pre-drilled pilot holes, significantly reducing installation time and labor costs. This makes them particularly effective in construction settings where speed and accuracy matter—such as erecting carports, warehouses, sheds, and garage doors. Each screw is fitted with an integrated EPDM rubber washer, providing enhanced sealing properties against moisture ingress and vibration-induced loosening. The neoprene-based bonding ensures long-term elasticity and prevents damage to the surface material during tightening.

These fasteners are widely used in industries such as infrastructure development, electrical enclosures, HVAC systems, agricultural structures, and marine environments. Their ability to perform under harsh climatic conditions—from the arid deserts of Saudi Arabia to the humid tropics of Southeast Asia—makes them a trusted choice among contractors and engineers globally. In addition to standard sizes, we also provide customized solutions tailored to specific project demands, including different thread pitches, lengths, and finishes.

Users consistently report improved installation efficiency, reduced maintenance issues, and extended service life compared to traditional fasteners. Many professionals highlight the consistent torque performance and minimal risk of stripping threads, even when working with thicker gauge metals. The combination of robust material science and intelligent design results in fewer rework instances and higher overall job satisfaction.

Common questions often revolve around compatibility with various substrates, expected lifespan in outdoor environments, and how the EPDM washer contributes to waterproofing. While most users find the screws compatible with galvanized steel, aluminum, and other alloys, it’s recommended to verify substrate thickness and hardness before application. With proper installation, these fasteners can last over a decade in exposed conditions without significant degradation. The EPDM washer acts as a barrier against water penetration, especially beneficial in roofing and cladding applications where condensation and rain exposure are common.

For those seeking reliable, corrosion-resistant fastening solutions across Europe, North America, South America, Africa, and the Middle East, DIN7504K hex head self-drilling screws with EPDM bonded washers represent a smart investment in quality, longevity, and operational efficiency.

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