Qualfast: M20 Hex Nut A2 (70) Grade A2 Qualfast fasteners are constructed from an Austenitic grade of stainless steel, which has an exceptionally high resistance to corrosion, with the exception of harsh industrial and marine conditions. ISO metric threaded. Features and Benefits Delivers oxidation resistance up to 850C Displays excellent resistance to nitric acid and similar oxidising chemicals Greatly strengthened when heavily cold worked Handles temperatures down to -250C Typical Applications Automotive Aircraft construction Industrial machines and equipment Standards EN 24032 MPN: M20 Hex Nut A2 (70) Attributes: Box Quantity: 50 Driving Features: Hexagon Grade: 70 Material: A2 Stainless Surface Treatment: Plain Thread: Metric Thread Direction: Right Thread Size: M20 Thread Standard: Metric