Fangrui Product Details Item: Double End Threaded Stud System Of Measurement: Inch Material: Steel Finish: Black Oxide Rockwell Hardness: C27 Thread: 5/8-11 Unc, Right Hand Thread Direction: Right Hand Thread Length Per End: 1-3/4 In Thread Length Type: Equal Overall Workable Length: 6-1/4 In Min Tensile Strength: 125,000 Psi Class: 2a Key Benefits And Features - High-strength Steel With Black Oxide Finish For Corrosion Resistance And Durability - Equal-length Threaded Ends Provide Balanced Engagement On Both Sides - Standard 5/8-11 Unc Right-hand Threads For Broad Compatibility With Nuts And Tapped Holes - Rockwell Hardness C27 Offers Good Wear Resistance For Repeated Assemblies - Long Enough To Accommodate Multiple Components With Secure, Reliable Clamping Compatibility And Applications - Works With Standard 5/8-11 Unc Nuts And Mating Threaded Holes - Ideal For Joining Two Components Where Through-assembly Or Symmetrical Fastening Is Required - Suitable For Automotive, Machinery, Fabrication, And Equipment Mounting Use Scenarios - Mounting A Gearbox Or Motor To A Chassis Where Clearance Allows Access From Both Sides - Joining Brackets Or Flanges In Mechanical Assemblies That Require Precise Alignment - Replacing Bolts With A Double-end Stud To Simplify Disassembly And Reassembly In Maintenance Tasks