The VALUE COLLECTION M4 Stainless Steel Hi-Collar Split Lock Washers (HLW0X0400-100BX) are engineered to provide secure fastening solutions in various industrial applications. Designed to fit M4 screws, these washers feature an inside diameter ranging from 4.1mm to 4.4mm, an outside diameter of 7mm, and a thickness of 1.2mm. Constructed from 18-8 Austenitic Grade A2 stainless steel, they offer enhanced corrosion resistance, making them suitable for environments where durability is paramount. The hi-collar design ensures a firm grip, effectively preventing loosening due to vibrations or dynamic loads. These washers meet the DIN 7980 standard, ensuring consistent quality and performance. Supplied in a box of 100 units, they offer an economical solution for bulk fastening needs. By incorporating these washers into your operations, you can enhance the reliability and longevity of your assemblies, reducing maintenance costs and downtime associated with fastener failures.