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Hex Bolt vs Heavy Hex Bolt


Hex Bolt vs Heavy Hex Bolt


Table of Content


fasteners types


Overview of Hex Bolt & Heavy Hex Bolt , Check Advantages and Disadvantages


Overview of Heavy Hex Bolt & Industries Use


Overview of Heavy Hex Bolt & Industries Use

What Are The Main Advantage & Disadvantages Of A Heavy Hex Bolt ?


Advantages Disadvantages
Strong Bulky
Good Load Distribution Harder to Install
Better Grip Expensive
Durable Stress on Materials
Versatile Not Aesthetic

What Are The Disadvantages Of Hex Bolts?


What Are The Disadvantages Of Hex Bolts?


Check Standard Hex Bolt & Heavy Hex Bolt Dimensions & Weight Chart


Hex Bolt Dimensions In MM


Hex Bolt Dimensions In MM

Nominal Size or Diameter (Inch) Body Diameter, E Width Corners, G Width Flats, F Fillet Radius, R Head Height, H Thread Length
Over 6 inches 6 inches & Shorter
Maximum Minimum Maximum Minimum Basic Maximum Minimum Maximum Minimum Basic Maximum Minimum Nominal Nominal
3/8"
0.3750
 0.388 0.360 0.650 0.620 9/16" 0.562 0.544 0.03 0.01 1/4" 0.268 0.226 1.250 1.000
5/16"
0.3125
 0.324 0.298 0.577 0.552 1/2" 0.500 0.484 0.03 0.01 7/32" 0.235 0.195 1.125 0.875
1/4"
0.2500
 0.260 0.237 0.505 0.484 7/16" 0.438 0.425 0.03 0.01 11/64" 0.188 0.150 1.000 0.750
7/16"
0.4375
 0.452 0.421 0.722 0.687 5/8" 0.625 0.603 0.03 0.01 19/64" 0.316 0.272 1.375 1.125
1/2"
0.5000		 0.515 0.482 0.866 0.826 3/4" 0.750 0.725 0.03 0.01 11/32" 0.364 0.302 1.500 1.250
5/8"
0.6250		 0.642 0.605 1.083 1.033 15/16" 0.938 0.906 0.06 0.02 27/64" 0.444 0.378 1.750 1.500
3/4"
0.7500		 0.768 0.729 1.299 1.240 1-1/8" 1.125 1.088 0.06 0.02 1/2" 0.524 0.455 2.000 1.750
1"
1.0000
 1.022 0.976 1.732 1.653 1-1/2" 1.500 1.450 0.09 0.03 43/64" 0.700 0.591 2.500 2.250
7/8"
0.8750		 0.895 0.852 1.516 1.447 1-5/16" 1.312 1.269 0.06 0.02 37/64" 0.604 0.531 2.250 2.000
1-1/8"
1.1250
 1.149 1.098 1.949 1.859 1-11/16" 1.688 1.631 0.09 0.03 3/4" 0.780 0.658 2.750 2.500
1-3/8"
1.3750		 1.404 1.345 2.382 2.273 2-1/16" 2.062 1.994 0.09 0.03 29/32" 0.940 0.810 3.250 3.000
1-1/4"
1.2500
 1.277 1.223 2.165 2.066 1-7/8" 1.875 1.812 0.09 0.03 27/32" 0.876 0.749 3.000 2.750
1-1/2"
1.5000		 1.531 1.470 2.598 2.480 2-1/4" 2.250 2.175 0.09 0.03 1" 1.036 0.902 3.500 3.250
1-5/8"
1.6250		 1.658 1.591 2.815 2.616 2-7/16" 2.438 2.356 0.09 0.03 1-3/32" 1.116 0.978 3.750 3.500
2 1/2"
2.5000		 2.559 2.461 4.330 4.133 3-3/4" 3.750 3.625 0.19 0.06 1-21/32" 1.708 1.479 5.500 5.250
1-7/8"
1.8750		 1.912 1.839 3.248 3.099 2-13/16" 2.812 2.719 0.12 0.04 1-1/4" 1.276 1.130 4.250 4.000
2"
2.0000		 2.039 1.964 3.464 3.306 3" 3.000 2.9000 0.12 0.04 1-11/32" 1.388 1.175 4.500 4.250
1-3/4"
1.7500		 1.785 1.716 3.031 2.893 2-5/8" 2.625 2.538 0.12 0.04 1-5/32" 1.196 1.054 4.000 3.750
2 1/4"
2.2500		 2.305 2.214 3.897 3.719 3-3/8" 3.375 3.262 0.19 0.06 1-1/2" 1.548 1.327 5.000 4.750
3"
3.0000		 3.081 2.961 5.196 4.959 4-1/2" 4.500 4.350 0.19 0.06 2" 2.060 1.815 6.500 6.250
2-3/4"
2.7500		 2.827 2.711 4.763 4.546 4-1/8" 4.125 3.988 0.19 0.06 1-13/16" 1.869 1.632 6.000 5.750
3-1/4"
3.2500		 3.335 3.210 5.629 5.372 4-7/8" 4.875 4.712 0.19 0.06 2-3/16" 2.251 1.936 7.000 6.750
3-3/4"
3.7500		 3.858 3.726 6.495 6.198 5-5/8" 5.625 5.437 0.19 0.06 2-1/2" 2.572 2.241 8.000 7.750
3-1/2"
3.5000		 3.589 3.461 6.062 5.786 5-1/4" 5.250 5.075 0.19 0.06 2-5/16" 2.380 2.057 7.500 7.250
4"
4.0000		 4.111 3.975 6.928 6.612 6" 6.000 5.800 0.19 0.06 2-11/16" 2.764 2.424 8.500 8.250

Heavy Hex Bolt Size Chart


Bolt Diameter D H C F
Body Diameter Height Width Corners Width Flats
maximum Basic minimum maximum minimum maximum Basic minimum maximum
11⁄8 1.149 3⁄4 0.658 0.780 2.002 2.093 113⁄16 1.756 1.812
1⁄2 0.515 11⁄32 0.302 0.364 0.969 1.010 7⁄8 0.850 0.875
3⁄4 0.768 1⁄2 0.455 0.524 1.383 1.443 11⁄4 1.212 1.250
13⁄4 1.785 15⁄32 1.054 1.196 3.035 3.175 23⁄4 2.662 2.750
11⁄2 1.531 1 0.902 1.036 2.622 2.742 23⁄8 2.300 2.375
15⁄8 1.658 13⁄32 0.978 1.116 2.829 2.959 29⁄16 2.481 2.562
5⁄8 0.642 27⁄64 0.378 0.444 1.175 1.227 11⁄16 1.031 1.062
13⁄8 1.404 29⁄32 0.810 0.940 2.416 2.526 23⁄16 2.119 2.188
7⁄8 0.895 37⁄64 0.531 0.604 1.589 1.660 17⁄16 1.394 1.438
1 1.022 43⁄64 0.591 0.700 1.796 1.876 15⁄8 1.575 1.625
17⁄8 1.912 11⁄4 1.130 1.276 3.242 3.392 215⁄16 2.844 2.938
2 2.039 111⁄32 1.175 1.388 3.449 3.608 31⁄8 3.025 3.125
21⁄4 2.305 11⁄2 1.327 1.548 3.862 4.041 31⁄2 3.388 3.500
11⁄4 1.277 27⁄32 0.749 0.876 2.209 2.309 2 1.938 2.00
21⁄2 2.559 121⁄32 1.479 1.708 4.275 4.474 37⁄8 3.750 3.875

Standard Heavy Hex Bolt Weight Chart


Standard Heavy Hex Bolt Weight Chart

Diameter M20 M12 M30 M16 M24 M22 M27 M36
Length
40 58.0 105
55 212 71.0 129 272
65 237 79.9 145 380 301
30 49.1
190 1337 822 1069 2014
35 53.6
45 188 62.1 113
70 249 84.3 153 398 316 532
75 262 88.8 701 160 415 331 554
80 274 93.2 728 168 433 346 576
195 1365 840 1092 2054
60 225 75.4 137 362 286
85 286 97.6 756 176 451 361 599 1184
50 200 66.6 121 257
90 298 102 784 184 467 375 621 1224
100 322 838 199 503 405 665 1304
105 335 865 207 520 420 688 1336
95 310 107 812 192 485 390 644 1264
110 347 893 215 538 435 710 1376
185 1309 804 1047 1974
120 372 949 231 574 465 755 1455
145 433 1087 662 539 867 1655
115 359 921 223 556 450 732 1415
125 384 976 239 591 479 777 1495
180 1281 787 1024 1935
140 421 1059 645 524 845 1615
130 396 1004 247 609 494 800 1535
150 446 1115 680 554 890 1695
135 409 1032 627 509 822 1575
160 1170 716 584 935 1775
155 458 1143 698 569 912 1735
165 1198 733 599 957 1815
175 1254 769 1002 1895
170 1226 751 979 1855
200 1392 1114 2094

Hex Bolt Weight Chart


LENGTH DIAMETER
7/16" 5/16" 1/4" 3/8" 3/4" 1/2" 5/8" 1" 7/8" 1.1/2" 1.1/8" 2" 1.3/4" 1.1/4"
3/4"     0.732                      
5" 10.246 5.208 3.205 7.407 34.014 14.706 23.148 64.103 46.729 161.29 81.967 312.5 238.095 106.383
7/8"   1.401 0.795                      
2" 5.388 2.41 1.458 3.344 17.921 7.013 11.82 33.557 23.81          
1"   1.479 0.868 1.984                    
16"         94.34 41.667 64.935 172.414 131.579 416.667 217.391 833.333 555.556 277.778
2.1/4" 5.794 2.646 1.603 3.676 19.38 7.634 12.821 36.232 25.773          
3" 7.013 3.344 2.041 4.695 23.697 9.434 15.823 43.103 31.447 113.636 57.471 238.095 166.667 75.758
1.1/4" 4.167 1.712 1.071 2.32   5.181 8.803              
8"       11.416 50.505 21.739 34.247 90.909 67.568 238.095 121.951 454.545 333.333 151.515
3.1/2" 7.813 3.817 2.336 5.376 26.596 10.638 17.794 49.02 35.211 125 64.103 250 185.185 84.746
4" 8.621 4.274 2.632 6.061 29.412 11.905 19.92 53.763 39.37 135.135 70.423 277.778 200 90.909
4.1/2" 9.434 4.753 2.924 6.729 31.25 13.158 21.186 56.818 42.735 142.857 76.923 294.118 217.391 98.039
6" 11.848 6.15 3.817 8.741 39.683 16.393 27.027 72.464 54.945 185.185 94.34 357.143 277.778 125
1.3/4" 5 2.183 1.307 3.003 16.502 6.41 10.799   21.93          
2.1/2" 6.196 2.874 1.751 4.016 20.833 8.237 13.812 38.76 27.624 104.167 51.02 217.391 151.515 67.568
7"       10.101 46.729 18.182 30.675 81.967 64.935 208.333 111.111 384.615 312.5 138.889
10"       14.286 63.291 25 43.478 113.636 84.746 277.778 138.889 555.556 416.667 185.185
9"       12.821 58.824 23.256 38.462 102.041 76.923 263.158 128.205 500 384.615 166.667
11"         67.568 27.933 46.296 121.951 92.593 294.118 151.515 555.556 416.667 200
18"         106.383 45.455 72.464 192.308 147.059 454.545 238.095   625 312.5
12"       17.241 72.464 31.447 49.505 131.579 100 312.5 161.29 625 454.545 208.333
1.1/2" 4.587 1.946 1.16 2.66 15.432 5.8 9.804              
14"         83.333 35.971 56.818 151.515 113.636 357.143 192.308 714.286 500 238.095
20"         119.048 50 80.645 217.391 161.29 500 263.158 714.286 357.143

Heavy Hex Bolt Vs Hex Bolt Which Is Better Weight Comparison


Heavy Hex Bolt Vs Hex Bolt Which Is Better Weight Comparison

Bolt Type Weight Use
Hex Bolt Light Weight General-purpose Application
Heavy Hex Bolt Heavy Weight High-strength works, load-bearing applications.

Heavy Hex Bolt With Higher Strength and Load-Bearing Capacity, Check Mechanical Properties Hex vs. Heavy Hex Bolt According to ASTM A563


Strength and Load-Bearing Capacity of Heavy Hex Bolt and Hex Bolt


  • ➤ Hex Bolt :Moderate Strength And Suitable For Medium To Light-duty Use
  • ➤ Heavy Hex Bolt :Higher Strength And Best For Heavy-duty, High-stress use

Mechanical Properties Hex vs. Heavy Hex Bolt According to ASTM A563


Grade Style Size, in. Hardness Proof Load, ksi
Galvanized Plain
B Heavy Hex 1-1/8 - 1-1/2 121 - 302 87 116
Hex 1/4 - 1 121 - 302 100 133
A Heavy Hex 1/4 - 4 116 - 302 75 100
Hex 1/4 - 1-1/2 116 - 302 68 90
D Heavy Hex 1/4 - 4 248 - 352 150 150
C / C3 Heavy Hex 1/4 - 4 143 - 352 144 144
DH / DH3 Heavy Hex 1/4 - 4 248 - 352 150 175

Different Alloys for Sturdy Hex Bolts


Inconel

  • 600, 718, 625
  • High Corrosion Resistance
  • Used In Blowout Preventers, Reactors

Monel

  • 400, K500, K-Monel
  • Seawater Corrosion Resistannt
  • Shipbuilding, Offshore

Hastelloy

  • C-276, G-30, B-2
  • Resistant to acids
  • Heat Exchangers, Chemical Systems

Duplex Stainless Steel

  • 2507, 2205
  • High Strength
  • Offshore, Tanks

Alloy 20

  • Acid Resistant
  • Used In Mixer, Reactors

Titanium

  • Gr 2, Gr 7, Gr 5
  • High strength-to-weight ratio
  • Structural Parts, Aircrafts

Check the Heavy Hex Bolt & Hex Bolt Installation and Maintenance Process, Refer Thickness & Torque Chart

Heavy Hex Bolt & Hex Bolt Installation and Maintenance Process


Heavy Hex Bolt & Hex Bolt Installation and Maintenance Process


Standard and specification of Hex Head Bolt & Heavy Hex Bolt


Aspect Hex Bolts Heavy Hex Bolts
Material Carbon steel High-grade alloy steel
Standards DIN 931, ISO 4014 ASTM A490, ASTM A325
Tensile Strength Min 400 MPa ASTM A325:830 MPa
Size Range Dia: M1.6 - M64 Based on application
Elongation Minimum 12% Focuses on high tensile strength
Resistant To Weather Corrosion Resistant Coated for durability
Shear Strength Acc to ISO/DIN Shear strengt High

Heavy Hex Bolt Thickness Chart


Bolt Diameter (inches) Head Thickness (inches) Bolt Diameter (mm) Head Thickness (mm)
1/2 0.349 14 8.87
5/16 0.221 8 5.61
1/4 0.171 6 4.35
9/16 0.391 16 9.93
3/8 0.257 10 6.53
5/8 0.443 18 11.25
3/4 0.531 20 13.49
7/16 0.298 12 7.57
7/8 0.617 22 15.67
1-1/4 0.875 30 22.23
1-1/2 1.048 36 26.62
1-1/8 0.794 27 20.17
1-3/8 0.981 33 24.92
1 0.698 24 17.73
1-5/8 1.170 39 29.72
2 1.448 48 36.77
1-7/8 1.348 45 34.24
1-3/4 1.250 42 31.75
2-1/4 1.641 57 41.69
3 2.217 76 56.34
2-1/2 1.833 63 46.55
3-1/4 2.410 83 61.21
2-3/4 2.025 70 51.44
3-1/2 2.602 89 66.12
4-3/4 3.566 120 90.57
4-1/2 3.373 114 85.69
3-3/4 2.795 95 71.00
4-1/4 3.181 108 80.78
4 2.988 100 75.89
5 3.759 127 95.46

Hex Bolt Torque Chart


Bolt Size TPI Clamp Load (lbs) Proof Load (lbs) Torque (ft lbs)
Galvanised+Waxed Plain Galvanised
7⁄16 14 2,640 3,521 10 19 24
3⁄8 16 1,925 2,567 6 12 15
9⁄16 12 4,521 6,028 21 42 53
1⁄4 20 790 1,053 2 3 4
5⁄8 11 5,614 7,485 29 58 73
5⁄16 18 1,302 1,735 3 7 8
1 8 15,053 20,071 125 251 314
1⁄2 13 3,525 4,700 15 29 37
11⁄8 7 18,953 25,271 178 355 444
3⁄4 10 8,297 11,062 52 104 130
7⁄8 9 11,476 15,301 84 167 209
11⁄4 7 24,070 32,093 251 501 627
13⁄8 6 28,690 38,254 329 657 822
13⁄4 5 47,196 62,928 688 1,377 1,721
2 41⁄2 62,100 82,800 1,035 2,070 2,588
11⁄2 6 34,900 46,534 436 873 1,091
3 4 148,295 197,726 3,707 7,415 9,268
21⁄4 41⁄2 80,730 107,640 1,514 3,027 3,784
23⁄4 4 122,461 163,282 2,806 5,613 7,016
21⁄2 4 99,360 132,480 2,070 4,140 5,125
31⁄4 4 176,364 235,152 4,777 9,553 11,941
33⁄4 4 239,954 319,939 7,499 14,997 18,746
31⁄2 4 206,917 275,890 6,035 12,070 15,088
4 4 275,227 366,970 9,174 18,348 22,936

Check the Difference in Cost Considerations Between Hex and Heavy Hex Bolts, and View Their Applications.

Difference in Cost Considerations Between Hex and Heavy Hex Bolts


Criteria Hex Bolts Heavy Hex Bolts
Size Smaller head size Larger head size, thicker and more robust
Standards ISO 4014, DIN 931 ASTM A325, ASTM A490
Material carbon steel, alloy steel High-grade alloy steel
Cost More affordable More expensive due to higher strength and size

Application of Hex Head Bolt and a Heavy Hex Bolt


Application of Hex Head Bolt and a Heavy Hex Bolt


Heavy Hex Bolt Coating Process


Heavy Hex Bolt Coating Process

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