1/2"-20 x 2-1/2" Grade 8 Yellow Zinc Finish Hex Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 2.500 INCHES NOMINAL NOMINAL THREAD DIAMETER: 0.500 INCHES THREAD QUANTITY PER INCH: 20 PART NAME ASSIGNED BY CONTROLLING AGENCY: SCREW CAP HEXAGON HEAD SPECIAL FEATURES: SPECIALLY DESIGNED WASHER FACE UNDER THE HEAD AND A CHAMFERED POINT. TENSILE STRENGTH GRADE 8. WRENCH SIZE 3/4 (0.750) INCHES COLOR: YELLOW OVERALL MATERIAL: STEEL OVERALL SURFACE TREATMENT: DICHROMATE OVERALL AND ZINC THREAD SERIES DESIGNATOR: UNF