M5 DIN 127 Mechanical Zinc Finish Split Lock Washer / HOLE DIAMETER: 5.1 MILLIMETERS MINIMUM AND 5.4 MILLIMETERS MAXIMUM OUTSIDE DIAMETER: 9.2 MILLIMETERS MAXIMUM MATERIAL THICKNESS: 1.1 MILLIMETERS MINIMUM AND 1.3 MILLIMETERS MAXIMUM END ITEM IDENTIFICATION: STRYKER HARDNESS RATING: 44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM PART NAME ASSIGNED BY CONTROLLING AGENCY: SPLIT LOCK WASHER MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B695, TYPE I, CLASS 50 ASSN STD SINGLE TREATMENT RESPONSE OVERALL STYLE DESIGNATOR: 108 SPLIT HELICAL-RIGHT HAND