Products

Grade 10.9 Hex Head Bolts

Products Attribute：
  • National Standard Code：GB/T 5782 / GB/T 5783
  • Material：20MnTiB / 40Cr
  • Surface Treatment：Black oxide finish / Electro-galvanized / Hot-dip galvanized / Dacromet coating
  • Available Diameters：M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36
  • Available Length (mm)：
    M6--16 20 25 30 35 40 45 50 55 60 65 70 80 90 100...
    M8--16 20 25 30 35 40 45 50 55 60 65 70 80 90 100...
    M10--16 20 25 30 35 40 45 50 55 60 65 70 80 90 100...
    M12--20 25 30 35 40 45 50 55 60 65 70 80 90 100 110...
    M14--20 25 30 35 40 45 50 55 60 65 70 80 90 100 110...
    M16--30 35 40 45 50 55 60 65 70 80 90 100 110 120 130...
    M18--40 45 50 55 60 65 70 80 90 100 110 120 130 140 150...
    M20--40 45 50 55 60 65 70 80 90 100 110 120 130 140 150...
    M22--50 60 70 80 90 100 110 120 130 140 150 160 170 180...
    M24--50 60 70 80 90 100 110 120 130 140 150 160 170 180...
    M27--60 70 80 90 100 110 120 130 140 150 160 170 180...
    M30--80 90 100 110 120 130 140 150 160 170 180 190 200...
    M33--80 90 100 110 120 130 140 150 160 170 180 190 200...
    M36--80 90 100 110 120 130 140 150 160 170 180 190 200...
    Custom diameters and lengths are available upon request

Product Detail



Structure: This product is an integrated single-piece hex head bolt. Flat washers, spring lock washers and nuts of matching materials can be matched according to on-site construction demands.

Application: Grade 10.9 high-strength hex head bolts are specially used for core heavy-load joints such as portal frames, long-span main beams, heavy-duty crane girders and load-bearing trusses in the project, suitable for working conditions with high wind pressure, high seismic resistance and frequent vibration. They can replace Grade 8.8 bolts for secondary steel components in high-standard construction sections. Low-strength bolts are adopted for light enclosure secondary structures under classified control. High anti-corrosion surface treatment processes are selected for corrosive environments to precisely match load requirements of each position and ensure long-term safety and stability of the overall steel structure.