Machining Customed Turning Carbon Steel Screw with Internal Thread Xing Lun Bearings Group Limited Base Info Model NO.:XLB Machining 150867Material:Carbon SteelType:Round HeadGroove:Interior Angles QuartetConnection:Common BoltHead Style:RoundStandard:DIN, JISGrade:12.9Trademark:XLB Machining Description Pre:Own Factory Your One-Stop Supplier Stainless Steel Customized Bolt Next:Quality Chinese Products Hot-Working Rebar Customized Bolt with Hole