Flexco Quality Conveyor Belt Fastener Shanxi Betop Industry & Trade Co., Ltd Base Info Material:Stainless SteelType:Round HeadConnection:Hinged BoltsHead Style:RoundStandard:DINGrade:12.9Application:MachineryFinish:Color-Zinc Plated Description Pre:Hex Head Structural Heavy Nuts A563 2h Stainless Steel Next:ASTM A563 Gr Dh Heavy Hex Nut