JRP Riveting Products M4 x 11.5 (0.5-2.0) Steel Reduced Head Round Knurled Body JRP Rivet Nuts (Box of 1500)The JRP Riveting Products M4 x 11. 5 Steel Reduced Head Round Knurled Body Rivet Nuts are designed for secure fastening in lightweight applications. These rivet nuts provide a strong hold and are easy to install, making them ideal for various projects. High Quality Steel Construction for Durability Reduced Head Design for Space Saving Applications Knurled Body for Enhanced Grip and Stability Compatible with M4 Threads for Versatile Use Perfect for DIY