Fasteners, CNC Parts, Hex Bolts manufacturer / supplier in China, offering M6X 20/25mm Square Head T-Slot Bolts for 3030 Aluminum Profile, T Slot Drop-in Bolt T-Bolt Hammer Head Bolt T Screw Stud for 3030 Series Standard 8mm T-Slot Aluminum Extrusion Profile, M5 M6 M8 T Hammer Head T Bolt Aluminum Connector T Head Bolts Screws for 20/30/40/45 Aluminum Profiles and so on.