There is approximately a 20% savings cost for using rolled threads instead of cut thread rods. Per ACI 318 Section D, there is no capacity difference between the two methods of manufacturing when used as anchor bolts set in concrete.

1. Brad Dove, Technical Sales
702-290-9625
brad@steelworkbolts.com
Tensile
Stress Area
(in^2)
ACI 318-05
Sect D.5.1.2
Tensile
Strength
Yield
Strength
Tensile
Strength
Yield
Strength
Tensile
Strength
Yield
Strength
Eff Area
½ 0.500 0.668 0.4500 Y 0.482 0.444 0.196 0.159 19% 0.1419 4.63 2.49 5.99 3.80 9.98 7.26
⅝ 0.625 1.043 0.5660 Y 0.605 0.559 0.307 0.252 18% 0.2260 7.37 3.97 9.53 6.06 15.89 11.57
¾ 0.750 1.502 0.6850 Y 0.729 0.677 0.442 0.369 17% 0.3340 10.90 5.86 14.09 8.96 23.48 17.10
⅞ 0.875 2.044 0.8028 Y 0.852 0.795 0.601 0.506 16% 0.4620 15.07 8.11 19.49 12.39 32.48 23.65
1 1.000 2.670 0.9188 Y 0.976 0.91 0.785 0.663 16% 0.6060 19.77 10.64 25.57 16.25 42.61 31.02
1 ⅛ 1.125 3.379 1.0322 Y 1.098 1.023 0.994 0.837 16% 0.7630 24.89 13.39 32.19 20.46 53.65 39.06
1 ¼ 1.250 4.172 1.1572 Y 1.223 1.148 1.227 1.052 14% 0.9690 31.61 17.01 40.88 25.98 68.13 49.60
1 ½ 1.500 6.008 1.3917 N 1.470 1.381 1.767 1.521 14% 1.4050 45.84 24.66 59.27 37.67 98.79 71.92
1 ¾** 1.750 8.178 1.6201 N 1.716 1.608 2.405 2.061 14% 1.9000 61.99 33.35 80.16 50.94 133.59 97.26
2 2.000 10.680 1.8557 N 1.964 1.843 3.142 2.705 14% 2.5000 81.56 43.88 105.47 67.03 175.78 127.97
2 ¼ 2.250 13.520 2.1057 N 2.214 2.093 3.976 3.482 12% 3.2500 106.03 57.04 137.11 87.14 228.52 166.36
2 ½ 2.500 16.690 2.3376 N 2.461 2.324 4.909 4.292 13% 4.0000 130.50 70.20 168.75 107.25 281.25 204.75
2 ¾ 2.750 20.190 2.5876 N 2.711 2.574 5.940 5.259 11% 4.9300 160.84 86.52 207.98 132.19 346.64 252.35
3 3.000 24.030 2.8376 N 2.961 2.824 7.069 6.324 11% 5.9700 194.77 104.77 251.86 160.07 419.77 305.59
3 ¼ 3.250 28.210 3.0876 N 3.211 3.073 8.296 7.487 10% 7.1000 231.64 124.61 299.53 190.37
3 ½ 3.500 32.710 3.3376 N 3.461 3.323 9.621 8.749 9% 8.3300 271.77 146.19 351.42 223.35
3 ¾ 3.750 37.550 3.5876 N 3.710 3.573 11.045 10.109 8% 9.6600 315.16 169.53 407.53 259.01
4 4.000 42.750 3.8376 N 3.960 3.823 12.566 11.567 8% 11.0800 361.49 194.45 467.44 297.08
For technical inquires, contact Al Davis at aldavis@steelworkbolts.com or 210-414-8004
or visit our website at www.steelworkbolts.com
Anchor Bolt Sizes
Min Min
(based on
pitch dia)
Cold-
Forged
Nut
Nominal
Size (in)
Diameter
(dec)
Wgt/Ft (lb) Pitch Dia
Body/Shank Area (in^2)
Body/Shank
Diameter (in)
Rolled
Threads
% weight
savings
using
rolled
threads
Full Diameter
Reduced
Diameter
Cut
Threads
LRFD, фR.n LRFD, фR.n LRFD, фR.n
36 55 105
Anchor Bolt Comparison: Rolled Threads vs. Cut Threads
F 1554 Anchor Bolt: ACI Allowable Load
Capacity
F 1554 Grade
Tensile/Yield Strength Based on Effective Area (Cut
or Rolled Threads per ACI 318 Section D)