Configurations

A354 has no limitations with regards to the configuration of the fasteners. The most commonly specified configurations are headed bolts (hex or heavy hex head), and rods (fully threaded or threaded both ends). Bent anchor bolts, u-bolts, or virtually any other type of externally threaded fastener could be manufactured if required.

Hex / Heavy Hex Bolt

Section 7.1 of ASTM A354 notes that, “unless otherwise specified, the bolts shall be hex head with dimensions conforming to the latest issue of ASME B18.2.1.” Often times however, due to A354 being a high strength fastener, heavy hex head bolts are specified.

Hex Bolt Dimensions

Click table to show drawing
Bolt Diameter D F C H
Body Diameter Width Across Flats Width Across Corners Height
Max Basic Max Min Max Min Basic Max Min
12 0.515 34 0.750 0.725 0.866 0.826 1132 0.364 0.302
58 0.642 1516 0.938 0.906 1.083 1.033 2764 0.444 0.378
34 0.768 118 1.125 1.088 1.299 1.240 12 0.524 0.455
78 0.895 1516 1.312 1.269 1.516 1.447 3764 0.604 0.531
1 1.022 112 1.500 1.450 1.732 1.653 4364 0.700 0.591
118 1.149 11116 1.688 1.631 1.949 1.859 34 0.780 0.658
114 1.277 178 1.875 1.812 2.165 2.066 2732 0.876 0.749
138 1.404 2116 2.062 1.994 2.382 2.273 2932 0.940 0.810
112 1.531 214 2.250 2.175 2.598 2.480 1 1.036 0.902
158 1.658 2716 2.438 2.356 2.815 2.616 1332 1.116 0.978
134 1.785 2-5/8 2.625 2.538 3.031 2.893 1532 1.196 1.054
178 1.912 21316 2.812 2.719 3.248 3.099 114 1.276 1.130
2 2.039 3 3.000 2.900 3.464 3.306 11132 1.388 1.175
214 2.305 338 3.375 3.262 3.897 3.719 112 1.548 1.327
212 2.559 334 3.750 3.625 4.330 4.133 12132 1.708 1.479
Dimensions per ASME B18.2.1 2010

Heavy Hex Dimensions

Click table to show drawing
Bolt Diameter D F C H
Body Diameter Width Across Flats Width Across Corners Height
Max Basic Max Min Max Min Basic Max Min
12 0.515 78 0.875 0.850 1.010 0.969 1132 0.364 0.302
58 0.642 1116 1.062 1.031 1.227 1.175 2764 0.444 0.378
34 0.768 114 1.250 1.212 1.443 1.383 12 0.524 0.455
78 0.895 1716 1.438 1.394 1.660 1.589 3764 0.604 0.531
1 1.022 158 1.625 1.575 1.876 1.796 4364 0.700 0.591
118 1.149 11316 1.812 1.756 2.093 2.002 34 0.780 0.658
114 1.277 2 2.00 1.938 2.309 2.209 2732 0.876 0.749
138 1.404 2316 2.188 2.119 2.526 2.416 2932 0.940 0.810
112 1.531 238 2.375 2.300 2.742 2.622 1 1.036 0.902
158 1.658 2916 2.562 2.481 2.959 2.829 1332 1.116 0.978
134 1.785 234 2.750 2.662 3.175 3.035 1532 1.196 1.054
178 1.912 21516 2.938 2.844 3.392 3.242 114 1.276 1.130
2 2.039 318 3.125 3.025 3.608 3.449 11132 1.388 1.175
214 2.305 312 3.500 3.388 4.041 3.862 112 1.548 1.327
212 2.559 378 3.875 3.750 4.474 4.275 12132 1.708 1.479

Dimensions per ASME B18.2.1 2010

Anchor Rods

A354 Grades BC and BD are often specified for anchor bolt applications. In these instances, typically they are designated as anchor rods. Anchor rods, also referred as anchor bolts, concrete embeds or foundation bolts, are embedded in concrete foundations and used in applications such as supporting structural steel columns, light poles, highway sign structures, and industrial equipment.

Anchor rods can take the form of straight rods with threads on both ends, or rods that are fully threaded.

All Thread Rod

All thread rods are used in a variety of construction applications. A few of the common ways all thread rods are used in the construction industry are as anchor bolts, as epoxy anchors, and for pipe flange connections.

All thread rod is readily available in most diameters in both A354 Grades BC and BD.

Other Configurations

A354 does not have any limitations with regards to the configuration of the fastener. If high strength material is required for a particular application, U-bolts, 90-degree bend anchor bolts, or headed bolts other than hex or heavy hex are able to be manufactured.