400-Pack Serrated Flange Lock Nuts 3/8-16 - Zinc Plated Steel, Hex Drive 9/16", Lexar Industrial Bulk Fasteners

Need a bunch of lock nuts for a project? This 400-pack from Lexar Industrial has you covered. The nuts are serrated flange type, size 3/8-16 thread, with a 9/16\ hex drive. Made from steel with a zinc plating to resist rust. The serrated flange helps grip surfaces, reducing the chance of loosening from vibration. Perfect for automotive, machinery, fencing, or any assembly where security matters. Bulk quantity means you'll have plenty for multiple jobs or to keep in your workshop. They're brand new in the original packaging. MPN 200764914689. No EAN or ISBN, but they're standard industrial fasteners. Whether you're a mechanic, fabricator, or serious DIYer, having these on hand saves time and trips to the hardware store.