3/8" Yellow Zinc Finish Heavy Split Lock Washer / END ITEM IDENTIFICATION: 2330015386359 CLOSED INSIDE DIAMETER: 0.385 INCHES NOMINAL CLOSED OUTSIDE DIAMETER: 0.688 INCHES NOMINAL SPECIAL FEATURES: HEAVY SPLIT; ASME B18.21.1. MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: MATERIAL CARBON STEEL, SAE J403 1055-1065 ASSN STD SINGLE MATERIAL RESPONSE OVERALL SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B695, CLASS 5, TYPE 2 YELLOW ASSN STD SINGLE TREATMENT RESPONSE OVERALL STYLE DESIGNATOR: 108 SPLIT HELICAL-RIGHT HAND