Unifix Class 4 Lock Nuts DIN 936 Bright Zinc Plated - M8 x 1.25 (Box of 3000)The Unifix Class 4 Lock Nuts DIN 936 Bright Zinc Plated M8 x 1. 25 (Box of 3000) are designed for secure fastening in various applications. These lock nuts provide excellent resistance to loosening under vibration, making them ideal for use in machinery and automotive settings. High Quality Bright Zinc Plated Finish for Corrosion Resistance Class 4 Strength for Enhanced Durability Standard M8 x 1. 25 Size for Versatile Use Easy to Install with