High strength hex bolt

Galvanized Hex Head Bolt

High Strength/Tensile Bolt

  • Standard: GB5782/GB5783
  • Raw Material: 45#, 20MnTiB/40Cr/35CrMoA
  • Strength Level: 6.8, 8.8, 10.9, 12.9
  • Surface Treatment: quench, cold galvanizing, hot-dip galvanizing,DACROMET
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What is High Strength Bolt

High-strength bolts are made of high-strength steel, or bolts that require a large pre-tightening force. The application areas include bridges, rails, and the connection of high-pressure and ultra-high pressure equipment. of preload.

High Strength Bolt Product from AGICO

Full Thread Hex Head Bolt
High Tensile Half Thread Bolt
Socked Hex Head Bolt

Small Size High Strength Bolt Dimension:

d M5 M6 M8 M10 M12 M14 M16
p 0.8 1 1.25 1.5 1.75 2 2
s 8.00 10.00 13.00 16.00 18.00 21 24
k 3.5 4 5.3 6.4 7.5 8.8 10
e 8.79 11.05 14.38 17.77 20.03 23.36 26.75

Medium Size High Strength Bolt Dimension:

d M18 M20 M22 M24 M27 M30 M33
p 2.5 2.5 2.5 3 3 3.5 3.5
S 27.00 30 34.00 36.00 41 46 50
k 11.5 112.5 14 15 17 18.7 21
e 30.14 33.53 37.72 39.98 45.2 50.85 55.37

Large Size High Strength Bolt Dimension:

d M36 M39 M42 M45 M48 M56 M64
P 4 4 4.5 4.5 5 5.5 6
s 55.0 60.0 65.0 70.0 75.0 85.0 95
k 22.5 25 26 28 30 35 40
e 60.79 66.44 71.3 76.95 82.6 93.56 104.86

High Strength Bolt Mechanical Property:

Property class Minimum Tensile Strength N/mm, HRC Elongation % Reduction %
8.8 d<16mm >800 22-32 >12 >52
8.8d>16mm >2830 23-34 >12 >52 
10.9 >2040 32-39 >9 >48
12.9 >1220 39-44 >8 >44

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