A2 M20 HALF-LOCK NUT 304 SS DIN 439 is a high-performance stainless steel fastener built for precision and durability. Manufactured to strict DIN standards, it ensures a reliable and secure fit for various applications. Designed with a slotted or recessed drive, it allows for smooth and effortless installation. Crafted from A2 grade 304 stainless steel, it provides exceptional corrosion resistance, making it suitable for harsh environments. Ideal for use in construction, engineering, and marine projects, it offers outstanding strength and longevity. Whether used in industrial machinery or home improvement, this fastener ensures a firm hold and professional finish. Trusted by tradespeople and DIY users, it stands up to demanding conditions while maintaining structural integrity.