High Strength Hex Bolt

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High Strength Hex Bolt Dimensions of High Strength Hex Bolt for GB/T1228 Steel Structure
High Strength Hex Bolt Dimensions of High Strength Hex Bolt for GB/T1228 Steel Structure

Our high strength hex bolt consists of main bolt, a nut and two washers, coming with high strength and good mechanical properties. Our product is separated into 10.9 S and 8.8 S according to the product grade. 10.9 S offers 1040~ 1240MPa tensile strength and 8.8 S ranges from 830 ~ 1030 MPa. Their elongation rates are respectively 10% and 12%. This product is designed to link steel structural panels together. Generally speaking, this kind of connection is permanent connection. In addition, it must be kept in a dry place or a water proof and moisture proof box.

Thread Standard
Thread Standards (d) M12 M16 M20 M22 M24 M27 M30
Thread Pitch P 1.75 2 2.5 2.5 3 3 3.5
c Max. 0.8 0.8 0.8 0.8 0.8 0.8 0.8
Min. 0.4 0.4 0.4 0.4 0.4 0.4 0.4
da Max. 15.23 19.23 24.32 26.32 28.32 32.84 35.84
ds Max. 12.43 16.43 20.52 22.52 24.52 27.84 30.4
Min. 11.57 15.57 19.48 21.48 23.48 26.16 29.16
dw Min. 19.2 24.9 31.4 33.3 38 42.8 46.5
e Min. 22.78 59.56 37.29 39.55 45.2 50.85 55.37
k Nominal Value 7.5 10 12.5 14 15 17 18.7
Max. 7.95 10.75 13.4 14.9 15.9 17.9 19.75
min 7.05 9.25 11.6 13.1 14.1 16.1 17.65
r Min. 1 1 1.5 1.5 1.5 2 2
s Max. 21 27 34 36 41 46 50
Min. 20.16 26.16 33 35 40 45 49
b Nominal Value (L) <45 ≥45 <55 ≥55 <65 ≥65 <70 ≥70 <75 ≥75 <80 ≥80 <85 ≥85
Nominal Value 25 30 30 35 35 40 40 45 45 50 50 55 55 60
Mechanical Properties
Performance Rate Tensile Strength Yield Strength (σ0.2) Elongation Rate(δ5) Shrinkage Rate (Ψ)
σь Mpa % %
Mpa min
10.9S 1040~ 1240 940 10 42
8.8S 830~ 1030 660 12 45
Tensile Load
Thread Standards (d) M12 M16 M20 M22 M24 M27 M30
Stress Areas (mm2) 84.3 157 245 303 353 459 561
Tensile Load (KN) 10.9S 87.7~ 104.5 163~ 195 255~ 304 315~ 376 367~ 438 477~ 569 583~ 696
8.8S 70.0~ 86.8 130~ 162 203~ 252 251~ 312 293~ 364 381~ 473 466~ 578

Our company is a professional high strength hex bolt manufacturer and supplier in China. We offer a broad range of products, including gable frame steel structure building, modified container house, EPS sandwich panel, and more.

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