Category: machine screw; groove type: hexagon socket; mode of action: can be; thread tolerance: 4H; head type: cylindrical head; surface treatment: galvanized; thread specification: national standard; material grade: carbon steel 4.8.
Features of non-slip hex bolts:
1, the thread is clear, the screw is deep, durable, not easy to remove teeth, reliable quality, can be used with confidence;
2, all made of high-quality materials, the surface is shiny without burrs, the edges and corners are clear, the appearance is bright and beautiful;
3, the internal thread is clear and deep, the force is even, and the internal thread is guaranteed to reach the 6H standard.