Trunnion (Right Hand Thread) For Screw Coupling, To Rdso Sk-99002, Alt-5, Item No. 6. Material & Specification: Rdso Spec. No. C-9505 (Revised), Amendment 1 Of October 2016. Material S Hould Be Supplied By Rdso Approved Sources Only. [ Warranty Period: 30 Months After The Date Of D Elivery ] ]