Qualfast: M3 Locknut N/M Insert A4 This range of metric hexagonal lock nuts are ideal for a variety of applications. Manufactured from A4 grade stainless steel, each nut is ISO metric threaded, has a prevailing torque type and possesses a durable nylon insert. Available to purchase in an array of sizes to suit your requirements. Features and Benefits The prevailing toque type ensures the product resists self-loosening under vibrations, making it ideal for use on machinery and automotive parts A4 grade stainless steel construction gives a bolstered level of resistance to corrosion Suited for marine applications due to the high grade manufacture Nylon insert is durable and retains its thread for a positive lock action Typical Applications Engineering Construction DIY Automotive Standards Conforms to DIN 985 Conforms to ISO 10511 MPN: M3 Locknut N/M Insert A4 Attributes: Box Quantity: 200 Driving Features: Hexagon Grade: 316 Leading Standard: DIN 985 (1987) Material: A4 Stainless Nut