A4 M4 NYLOC NUT DIN 985 316 SS is a high-quality stainless steel fastener designed for superior durability and resistance to corrosion. Manufactured to ISO 7380, DIN 985, or DIN 439 standards, this fastener ensures secure and reliable performance in various applications. It is ideal for marine, industrial, and construction use, offering exceptional strength and longevity. Perfect for projects requiring high tensile strength, stability, and resistance to rust and chemicals.