Nuts About Bolts M3 x 0.5 A2 Stainless Serrated Flanged Nyloc Nuts - Self-Locking Nylon Insert, Vibration-Resistant for Automotive, Machinery & High-Torque Applications - Pack of 50

• SERRATED FLANGE FOR SUPERIOR GRIP — The integrated serrated flange bites into the mating surface to prevent rotation and distribute load, eliminating the need for a separate washer and providing a more secure fixing than a standard nyloc nut alone
• DUAL LOCKING MECHANISM — Nylon insert grips the bolt thread firmly while the serrated flange locks against the surface, providing two independent layers of vibration resistance to keep fasteners secure under shock, movement, and temperature cycling
• A2 304 STAINLESS STEEL THROUGHOUT — Manufactured from high-grade A2 304 stainless steel for excellent corrosion resistance in outdoor, industrial, and marine-adjacent environments where standard steel fasteners would corrode and fail
• FULL METRIC SIZE RANGE M3 TO M12 — Available in M3, M4, M5, M6, M8, M10, and M12 to suit a wide variety of bolts, screws, and threaded fasteners across automotive, motorcycle, machinery, fabrication, and general DIY applications
• WIDE APPLICATION USE — Ideal for automotive and motorcycle assembly, machinery maintenance, structural fabrication, electrical enclosures, garden equipment, and any application where a reliable self-locking fastener is required

Secure every connection with confidence using these premium A2 304 stainless steel serrated flanged nyloc nuts, available in a full range of metric sizes from M3 through to M12 to cover virtually any application. The integrated serrated flange eliminates the need for a separate washer by distributing the clamping load across a wider surface area, while the sharp serrations bite into the mating surface to prevent rotation and resist loosening under vibration. The nylon insert provides a secondary locking mechanism, gripping the bolt thread firmly to ensure the nut stays exactly where you put it even under continuous movement, shock loads, or temperature cycling. Manufactured from A2 304 stainless steel throughout, these nuts offer excellent corrosion resistance making them equally at home in outdoor, marine-adjacent, and industrial environments where standard mild steel fasteners would quickly degrade. Suitable for use with any corresponding metric bolt or screw, they are ideal for automotive and motorcycle assembly, machinery maintenance, structural fabrication, electrical enclosures, garden equipment, and general DIY projects where a reliable, vibration-proof fixing is essential.