Standard and Function of Double Head BoltsMechanical properties of fasteners GB 3098.1 Mechanical properties of bolts, screws, studs and nuts GB 3098.6 Mechanical properties of fasteners Stainless ste...

I. Marking System of Performance LevelThe mechanical performance grade marks of bolts, screws and studs are expressed by two numbers separated by a dot (see Table 1-3 of ISO 898-1). The bits on the le...

"Screw" is just a general term for fasteners. It includes bolts, bolts and nuts. As long as there are threaded fasteners, bolts, nuts, bolts and bolts, they all have one thing in common, tha...