316 Stainless Steel (A4) DIN 934 Metric Hex Nuts The hex nut is the backbone of every bolted joint, and quality matters. Our DIN 934 hex nuts are precision manufactured from A4 grade 316 stainless steel, delivering exceptional corrosion resistance, consistent thread fit, and long term reliability in marine, coastal, and industrial environments. DIN 934 is the global standard for metric hex nuts, defining thread tolerance, nut height, and across flats dimensions so that every nut fits correctly on its mating bolt. This ensures proper load transfer, even clamping force, and dependable joint strength. These nuts are used throughout: Marine and offshore hardware Boatbuilding and refits Dock and marina installations Machinery and mechanical assemblies Automotive and trailer applications Structural and industrial construction Wherever a metric bolt or threaded rod is used, a properly made hex nut is critical to the integrity of the joint. Why DIN 934 Matters DIN 934 specifies the exact geometry and thread class required for metric fasteners to work together correctly. This prevents cross threading, galling, and uneven loading that can occur with poorly made hardware. These are not loose tolerance hardware store nuts. They are true metric DIN fasteners designed to mate precisely with DIN 931, DIN 933, and DIN 912 bolts. Material: A4 / 316 Stainless Steel These nuts are made from A4 stainless steel, also known as 316, the preferred alloy for corrosive and saltwater environments. Excellent resistance to rust and pitting Highly resistant to salt, moisture, and chemicals Strong and durable under load Long service life outdoors Non-magnetic in most conditions This is the same stainless used in marine rigging, deck hardware, and offshore fittings, and it dramatically outperforms A2, 18-8, or 304 stainless in coastal exposure. Size Width Across the Flats Thickness M4 6.9mm 3.0mm M5 7.83mm 3.8mm M6 9.9mm 4.8mm M8 12.8mm 6.3mm M10 16.8mm 8.0mm M12 18.9mm 9.8mm M14 21.85mm 10.7mm M16 23.9mm 12.45mm
