Bolt 1/2-20 X 2" Hex, Dimension As Per Emd Pt. No. 8287827 & Blw Pt. No. 19014296, Mat Erial Specifications Ams 6302 Or 6304 Steel Or Astm A564 630 Stainless Steel Only. [ Warranty Period : 30 Months After The Date Of Delivery ] ]