M4 DIN 127 Mechanical Zinc Finish Split Lock Washer / HOLE DIAMETER: 4.2 MILLIMETERS NOMINAL OUTSIDE DIAMETER: 7.6 MILLIMETERS NOMINAL MATERIAL THICKNESS: 0.8 MILLIMETERS MINIMUM AND 1.0 MILLIMETERS MAXIMUM SPECIAL FEATURES: M4 DIN 127 ZINC PLATED SPLIT LOCK WASHER MATERIAL: STEEL OVERALL STYLE DESIGNATOR: 108 SPLIT HELICAL-RIGHT HAND