1.Name:All kind of dry wall screws 2.Size: 3.5x13----4.8x152 ... plated,Passivated, Nickle plated, H.D.G., Black Oxided, Dacromet,Geomet,etc8.Production TechniqueCold foging,Hot ... nuts we can offer?1.NameHex head bolt,Square head bolt,Round head bolt,Hex socket bolt,Carriage bolt, ... plated,Passivated, Nickle plated, H.D.G., Black Oxided, Dacromet,Geomet,etc8.Production TechniqueCold foging,Hot forming ...