ASTM F1554 (Anchor Bolt)
ASTM F1554 - 18
| Classification | |||
| Grade | Tensile Strength ksi (MPa) | Description Yield Strength min, ksi (MPa) | Diameter Range, in. |
| 36 | 58 - 80 (400 - 558) | 36 (248) | 1/2" - 4" |
| 55 | 75 - 95 (517 - 655) | 55 (380) | 1/2" - 4" |
| 105 | 125 - 150 (862 - 1034) | 105 (724) | 1/2" - 3" |
| Class | |||
| 1A | Anchor Bolts with Class 1A Threads | ||
| 2A | Anchor Bolts with Class 1A Threads | ||
| Specification A563 Nut | |||||
| Anchor Bolt Grade and Diameter, (Inches) | Plain | Hot- Dip or Mechanical Zinc- Coated in accordance with Section 7A | |||
| Grade | Diameter (in.) | Grade | Style | Grade | Style |
| 36 | 1/2" - 1 - 1/2" | A | Hex | A | Hex |
| Over 1-1/2 | A | Heavy Hex | A | Heavy Hex | |
| 55 | 1/2" - 1 - 1/2" | A | Hex | A | Heavy Hex |
| Over 1-1/2" - 4" | A | Heavy Hex | A | Heavy Hex | |
| 105 | All | DH | Heavy Hex | DH | Heavy Hex |
| Chemical Composition Requirements | ||||
| Grade 36 | Grade 55 and 105 | |||
| Element | Diameters up to 3/4" (incl) | Over 7/8" to 4" (inclA) | All Diameters | |
| Carbon, max, % | Heat | 0.25 | 0.25 | --- |
| Product | 0.28 | 0.28 | --- | |
| Manganese, max, % | Heat | --- | 0.90 | --- |
| Product | --- | 0.98 | --- | |
| Phosphorus, max, % | Heat | 0.04 | 0.04 | 0.04 |
| Product | 0.05 | 0.05 | 0.048+ | |
| Sulfur, max, % | Heat | 0.05 | 0.05 | 0.05 |
| Product | 0.06 | 0.06 | 0.058 | |
| Copper. min, % (when specified) | Heat | 0.20 | 0.20 | 0.20 |
| Product | 0.18 | 0.18 | 0.18 | |
| Axial Tensile Properties for Full-Size Tests of Anchor Bolts and Drawn Coupons | |||||||||||||
| Unified Coarse Thread Series (UNC) | |||||||||||||
| Nominal Diameter and Thread (Inches) | Stress Area (Inches to mm) | Anchor Bolt Grade | |||||||||||
| Grade 36 | Grade 55 | Grade 105 | |||||||||||
| Tensile Strength | Yield Strength | Tensile Strength | Yield Strength | Tensile Strength | Yield Strength | ||||||||
| lbf | kN | lbf | kN | lbf | kN | lbf | kN | lbf | kN | lbf | kN | ||
| 1/2" - 13 UNC | 0.1419" (3.60mm) | 8,200 - 11, 400 | 5,100 | 10,600 - 13,500 | 7,800 | 17,700 - 21,300 | 14,900 | ||||||
| 5/8" - 11 UNC | 0.226" (5.74mm) | 13,100 - 18,100 | 58.27 - 80.51 | 8,100 | 36.03 | 17,000 - 21,500 | 75.62 - 95.64 | 12,400 | 55.16 | 28,200 - 33,900 | 125.44 - 150.79 | 23,700 | 105.42 |
| 3/4" - 10 UNC | 0.334" (8.48mm) | 19,400 - 26,700 | 86.30 - 118.77 | 12,000 | 53.38 | 25,000 - 31,700 | 111.24 - 141.01 | 18,400 | 81.85 | 41,800 - 50,100 | 185.94 - 222.86 | 35,100 | 156.13 |
| 7/8" - 9 UNC | 0.462" (11.73mm) | 26,800 - 37,000 | 119.21 -164.58 | 16,600 | 73.84 | 34,600 - 43,900 | 153.91 - 195.28 | 25,400 | 112.98 | 57 800 - 69,300 | 257.11 - 308.26 | 48,500 | 215.74 |
| 1" - 8 UNC | 0.606" (15.39mm) | 35,200 - 48,500 | 156.58 - 215.74 | 21,800 | 96.97 | 45,400 - 57,600 | 201.95 - 256.22 | 33,300 | 148.13 | 75,800 - 90,900 | 337.18 - 404.34 | 63,600 | 282.91 |
| 1 - 1/8" - 7 UNC | 0.763" (19.38mm) | 44,300 - 61,000 | 197.06 - 271.34 | 27,500 | 122.33 | 57,200 - 72,500 | 254.44 - 322.50 | 42,000 | 186.83 | 95,400 - 114,400 | 424.36 - 508.88 | 80,100 | 356.30 |
| 1 - 1/4" 7 UNC | 0.969" (24.61mm) | 56,200 - 77,500 | 249.99 - 344.74 | 34,900 | 155.24 | 72,700 - 92,100 | 323.39 - 409.68 | 53,300 | 237.09 | 121,000 - 145,000 | 538.23 - 644.99 | 102,000 | 453.72 |
| 1 - 1/2" - 6 UNC | 1.405" (35.69mm) | 81,500 - 112,400 | 362.53 - 499.98 | 50,600 | 225.08 | 105,000 - 133,000 | 467.06 - 591.61 | 77,300 | 343.85 | 176,000 - 216,000 | 782.89 - 960.82 | 148,000 | 658.34 |
| 1 - 3/4" - 5 UNC | 1.90" (48.26) | 110,000 - 152,000 | 489.30 - 676.13 | 68,400 | 304.26 | 142,000 - 180,000 | 631.65 - 800.68 | 104,500 | 464.84 | 238,000 - 285,000 | 1,058.68 - 1,267.74 | 200,000 | 889.64 |
| 2" - 4 - 1/2" UNC | 2.50" (63.50mm) | 145,000 - 200,000 | 644.99 - 889.64 | 90,000 | 400.34 | 188,000 - 238,000 | 836.27 - 1,058.68 | 138,000 | 613.85 | 312,000 - 375,000 | 1,387.85 - 1,668.08 | 262,000 | 1,165.43 |
| 2 - 1/4" - 4 - 1/2" UNC | 3.25" (82.55mm) | 188,000 - 260,000 | 836.27 - 1,156.54 | 117,000 | 520.44 | 244,000 - 309,000 | 1,085.37 - 1,374.50 | 179,000 | 796.23 | 406,000 - 488,000 | 1,805.98 - 2,170.73 | 341,000 | 1,516.84 |
| 2 - 1/2" - 4 UNC | 4.00" (101.60mm) | 232,000 - 320,000 | 1,031.99 - 1,423.439 | 144,000 | 640.54 | 300,000 - 380,000 | 1,334.47 - 1,690.32 | 220,000 | 978.61 | 500,000 - 600,000 | 2,224.11 - 2,668.93 | 420,000 | 1,868.25 |
| 2 - 3/4" - 4 UNC | 4.93" (125.22mm) | 286,000 - 394,000 | 1,272.19 - 1,752.60 | 177,000 | 787.34 | 370,000 - 468,000 | 1,645.84 - 2,081.77 | 271,000 | 1,205.47 | 616,000 - 740,000 | 2,740.10 - 3,291.68 | 518,000 | 2,304.18 |
| 3" - 4 UNC | 5.97" (151.64mm) | 346,000 - 478,000 | 1,539.08 - 2,126.25 | 215,000 | 956.37 | 448,000 - 567,000 | 1,992.80 - 2,522.14 | 328,000 | 1,459.02 | 746,000 - 896,000 | 3,318.37 - 3,985.61 | 627,000 | 2,789.03 |
| 3 - 1/4" - 4 UNC | 7.10" (180.34mm) | 412,000 - 568,000 | 1,832.67 - 2,526.59 | 256,000 | 1,138.74 | 532,000 - 674,000 | 2,366.45 - 2,998.10 | 390,000 | 1,734.80 | --- | --- | --- | --- |
| 3 - 1/2" - 4 UNC | 8.33" (211.58mm) | 483,000 - 666,000 | 2,148.49 - 2,962.52 | 300,000 | 1,334.47 | 625,000 - 791,000 | 2,780.14 - 3,518.54 | 458,000 | 2,037.29 | --- | --- | --- | --- |
| 3 - 3/4" - 4 UNC | 9.66" (245.36mm) | 560,000 - 773,000 | 2,491.00 - 3,438.48 | 348,000 | 1,547.99 | 724,000 - 918,000 | 3,220.51 - 4,083.47 | 531,000 | 2,632.01 | --- | --- | --- | --- |
| 4" - 4 UNC | 11.08" (281.43) | 643,000 - 886,000 | 2,860.21 - 3,941.12 | 399,000 | 1,774.84 | 831,000 - 1,053,000 | 3,696.47 - 4,683.98 | 609,000 | 2,708.97 | --- | --- | --- | --- |
| Axial Tensile Properties for Full-Size Tests of Anchor Bolts and Drawn Coupons | |||||||||||||
| 8 Thread Series (8 UN) | |||||||||||||
| Nominal Diameter and Thread (Inches) | Stress Area (Inches to mm) | Anchor Bolt Grade | |||||||||||
| Grade 36 | Grade 55 | Grade 105 | |||||||||||
| Tensile Strength | Yield Strength | Tensile Strength | Yield Strength | Tensile Strength | Yield Strength | ||||||||
| lbf | kN | lbf | kN | lbf | kN | lbf | kN | lbf | kN | lbf | kN | ||
| Nominal Diameter and Thread (Inches) | Stress Area (Inches to mm) | Tensile Strength | Yield Strength | Tensile Strength | Yield Strength | Tensile Strength | Yield Strength | ||||||
| lbf | kN | lbf | kN | lbf | kN | lbf | kN | lbf | kN | lbf | kN | ||
| 1 - 1/8" - 8 UN | 0.790"(20.07mm) | 45,800 - 63,200 | 203.73 - 281.13 | 28,400 | 126.33 | 59,200 - 75,000 | 263.33 - 333.62 | 43,400 | 193.05 | 98,800 - 118,500 | 439.48 - 527.11 | 83,000 | 369.20 |
| 1 - 1/4" - 8 UN | 1.000" (25.4mm) | 58,000 - 80,000 | 258.00 - 355.86 | 36,000 | 160.14 | 75,000 - 95,000 | 333.62 - 422.58 | 55,000 | 244.65 | 125,000 - 150,000 | 556.03 - 667.23 | 105,000 | 467.06 |
| 1 - 1/2" - 8 UN | 1.492" (37.90mm) | 86,500 - 119,400 | 384.77 - 531.12 | 53,700 | 238.87 | 112,000 - 142,000 | 498.20 - 631.65 | 82,100 | 365.20 | 186,000 - 224,000 | 827.37 - 996.40 | 157,000 | 698.37 |
| 1 - 3/4" - 8 UN | 2.08" (52.83mm) | 121,000 - 166,000 | 538.23 - 738.40 | 74,900 | 333.17 | 156,000 - 198,000 | 693.92 - 880.75 | 114,000 | 507.10 | 260,000 - 312,000 | 1,156.54 - 1,387.85 | 218,000 | 969.71 |
| 2" - 8 UN | 2.77" (70.36mm) | 161,000 - 222,000 | 716.16 - 987.51 | 99,700 | 443.49 | 208,000 - 263,000 | 925.23 - 1,169.88 | 152,000 | 676.13 | 346,000 - 416,000 | 1,539.08 - 1,850.46 | 291,000 | 1,294.43 |
| 2 - 1/4" - 8 UN | 3.56" (90.42mm) | 206,000 - 285,000 | 916.33 - 1,267.74 | 128,000 | 569.37 | 267,000 - 338,000 | 1,187.68 - 1,503.50 | 196,000 | 871.85 | 445,000 - 534,000 | 1,979.46 - 2,375.35 | 374,000 | 1,663.63 |
| 2 - 1/2" - 8 UN | 4.44" (112.78mm) | 258,000 - 355,000 | 1,147.64 - 1,579.12 | 160,000 | 711.72 | 333,000 - 422,000 | 1,481.26 - 1,877.15 | 244,000 | 1,085.37 | 555,000 - 666,000 | 2,468.76 - 2,962.52 | 466,000 | 2,072.87 |
| 2 - 3/4" - 8 UN | 5.43" (137.92mm) | 315,000 - 434,000 | 1,401.19 - 1,930.53 | 195,000 | 867.40 | 407,000 - 516,000 | 1,810.43 - 2,295.28 | 299,000 | 1,330.02 | 679,000 - 815,000 | 3,020.34 - 3,625.30 | 570,000 | 2,535.49 |
| 3" - 8 UN | 6.51" (165.35mm) | 378,000 - 521,000 | 1,681.43 - 2,317.52 | 234,000 | 1,040.88 | 488,000 - 618,000 | 2,170.73 - 2,749.00 | 358,000 | 1,592.46 | 814,000 - 976,000 | 3,620.85 - 4,341.46 | 684,000 | 3,042.58 |
| 3 - 1/4" - 8 UN | 7.69"(195.33mm) | 446,000 - 615,000 | 1,983.91 - 2,735.66 | 277,000 | 1,232.16 | 577,000 - 731,000 | 2,566.62 - 3,251.65 | 423,000 | 1,881.60 | --- | --- | --- | --- |
| 3 - 1/2" - 8 UN | 8.96"(227.58mm) | 520,000- 717,000 | 2,313.08 - 3,189.37 | 323,000 | 1,436.78 | 672,000 - 851,000 | 2,989.20 - 3,785.44 | 493,000 | 2,192.97 | --- | --- | --- | --- |
| 3 - 3/4" - 8 UN | 10.34" (262.64mm) | 600,000 - 827,000 | 2,668.93 - 3,678.68 | 372,000 | 1,654.74 | 776,000 - 982,000 | 3,451.82 - 4,368.15 | 569,000 | 2,531.04 | --- | --- | --- | --- |
| 4" - 8 UN | 11.81" (299.97mm) | 685,000 - 945,000 | 3,047.03 - 4,203.57 | 425,000 | 1,890.49 | 886,000 - 1,122,000 | 3,941.12 - 4,990.90 | 650,000 | 2,891.34 | --- | --- | --- | --- |
| Tensile Properties for Bars and Machined Specimens | |||
| Grade | |||
| 36 | 55 | 105 | |
| Tensile Strength (ksi) | 58 - 80 | 75 - 95 | 125 - 150 |
| Yield Strength, min, ksi (0.2% offset) | 36 | 55 | 105 |
| Elongation in 8 in,, min, %A | 20 | 18 | 12 |
| Elongation in 2 in. min, %A | 23 | 21 | 15 |
| Reduction of Area, min, % | 40 | 30 | 45 |
| Elongation in 8 in. applies to bars. Elongation in 2 in. applies to machined specimens. | |||
| Minimum Body Diameters | |||||||
| Unified Coarse Thread Series (UNC) | |||||||
| Nominal Diameter (Inches) | Threads/ Inches | Body Diameter | |||||
| Rolled Threads | Cut Threads | ||||||
| Class 1A | Class 2A | Classes 1A and 2A | |||||
| Inches | mm | Inches | mm | Inches | mm | ||
| 1/2" | 13 UNC | 0.4411 | 11.20 | 0.4435 | 11.26 | 0.4822 | 12.25 |
| 5/8" | 11 UNC | 0.5561 | 14.12 | 0.5589 | 14.20 | 0.6052 | 15.37 |
| 3/4" | 10 UNC | 0.6744 | 17.13 | 0.6773 | 17.20 | 0.7288 | 18.51 |
| 7/8" | 9 UNC | 0.7914 | 20.10 | 0.7946 | 20.18 | 0.8523 | 21.65 |
| 1" | 8 UNC | 0.9067 | 23.03 | 0.9100 | 23.11 | 0.9755 | 24.78 |
| 1-1/8" | 7 UNC | 1.0191 | 25.89 | 1.0228 | 25.98 | 1.0982 | 27.89 |
| 1-1/4" | 7 UNC | 1.1439 | 29.06 | 1.1476 | 29.15 | 1.2232 | 31.07 |
| 1-1/2" | 6 UNC | 1.3772 | 34.98 | 1.3812 | 35.08 | 1.4703 | 37.35 |
| 1-3/4" | 5 UNC | 1.6040 | 40.74 | 1.6085 | 40.86 | 1.7165 | 43.60 |
| 2" | 4 - 1/2 UNC | 1.8385 | 46.70 | 1.8433 | 46.82 | 1.9641 | 49.89 |
| 2-1/4" | 4 - 1/2 UNC | 2.0882 | 53.04 | 2.0931 | 53.16 | 2.2141 | 56.24 |
| 2-1/2" | 4 UNC | 2.3190 | 58.90 | 2.3241 | 59.03 | 2.4612 | 62.51 |
| 2-3/4" | 4 UNC | 2.5686 | 65.24 | 2.5739 | 65.38 | 2.7111 | 68.86 |
| 3" | 4 UNC | 2.8183 | 71.58 | 2.8237 | 71.72 | 2.9611 | 75.21 |
| 3-1/4" | 4 UNC | 3.0680 | 77.93 | 3.0734 | 78.06 | 3.2110 | 81.56 |
| 3-1/2" | 4 UNC | 3.3177 | 84.27 | 3.3233 | 84.41 | 3.4610 | 87.91 |
| 3-3/4" | 4 UNC | 3.5674 | 90.61 | 3.5730 | 90.75 | 3.7109 | 94.26 |
| 4" | 4 UNC | 3.8172 | 96.96 | 3.8229 | 97.10 | 3.9609 | 100.61 |
| Minimum Body Diameters | |||||||
| 8 Thread Series (8UN) | |||||||
| Nominal Diameter (Inches) | Threads/ Inches | Body Diameter | |||||
| Rolled Threads | Cut Threads | ||||||
| Class 1A | Class 2A | Classes 1A and 2A | |||||
| Inches | mm | Inches | mm | Inches | mm | ||
| 1-1/8" | 8 UN | --- | --- | 1.0348 | 26.28 | 1.1004 | 27.95 |
| 1-1/4" | 8 UN | --- | --- | 1.1597 | 29.46 | 1.2254 | 31.13 |
| 1-1/2" | 8 UN | --- | --- | 1.4093 | 35.80 | 1.4753 | 37.47 |
| 1-3/4" | 8 UN | --- | --- | 1.6590 | 42.14 | 1.7252 | 43.82 |
| 2" | 8 UN | --- | --- | 1.9087 | 48.48 | 1.9752 | 50.17 |
| 2-1/4" | 8 UN | --- | --- | 2.1584 | 54.82 | 2.2251 | 56.52 |
| 2-1/2" | 8 UN | --- | --- | 2.4082 | 61.17 | 2.4751 | 62.87 |
| 2-3/4" | 8 UN | --- | --- | 2.6580 | 67.51 | 2.7250 | 69.22 |
| 3" | 8 UN | --- | --- | 2.9077 | 73.86 | 2.9749 | 75.56 |
| 3-1/4" | 8 UN | --- | --- | 3.1575 | 80.20 | 3.2249 | 81.91 |
| 3-1/2" | 8 UN | --- | --- | 3.4074 | 86.55 | 3.4749 | 88.26 |
| 3-3/4" | 8 UN | --- | --- | 3.6571 | 92.89 | 3.7248 | 94.61 |
| 4" | 8 UN | --- | --- | 3.9070 | 99.24 | 3.9748 | 100.96 |
| Allowable Zinc Buildup on Coated Threads and Corresponding Thread Dimensions | |||||
| Nominal Diameter (Inches) | Threads/ Inches | Diametral Zinc Build Up (Inches) | Anchor Bolt Diameter (Max, In) | ||
| Major | Pitch | ||||
| Inches | mm | ||||
| 1/2" | 13 | 0.018 | 0.5165 | 13.12 | 0.4685 |
| 5/8" | 11 | 0.020 | 0.6434 | 16.34 | 0.5844 |
| 3/4" | 10 | 0.020 | 0.7682 | 19.51 | 0.7032 |
| 7/8" | 9 | 0.022 | 0.8951 | 22.74 | 0.8229 |
| 1" | 8 | 0.024 | 1.0220 | 25.96 | 0.9408 |
| 1-1/8" | 8 | 0.024 | 1.1469 | 29.13 | 1.0657 |
| 1-1/8" | 7 | 0.024 | 1.1468 | 29.13 | 1.0540 |
| 1-1/4" | 8 | 0.024 | 1.2719 | 32.31 | 1.1667 |
| 1-1/4" | 7 | 0.024 | 1.2718 | 32.30 | 1.5740 |
| 1-1/2" | 8 | 0.027 | 1.5248 | 38.73 | 1.4436 |
| 1-1/2" | 6 | 0.027 | 1.5246 | 38.72 | 1.4163 |
| 1-3/4" | 5 | 0.050 | 1.7973 | 45.65 | 1.6674 |
| 2" | 4.5 | 0.050 | 2.0471 | 52.00 | 1.9028 |
| 2-1/4" | 4.5 | 0.050 | 2.2971 | 58.35 | 2.1528 |
| 2-1/2" | 4 | 0.050 | 2.5469 | 64.69 | 2.3845 |
| 2-3/4" | 4 | 0.050 | 2.7968 | 71.04 | 2.6344 |
| 3" | 4 | 0.050 | 3.0468 | 77.39 | 2.8844 |
| 3-1/4" | 4 | 0.050 | 3.2967 | 83.74 | 3.1343 |
| 3-1/2" | 4 | 0.050 | 3.5467 | 90.09 | 3.3843 |
| 3-3/4" | 4 | 0.050 | 3.7966 | 96.43 | 3.6342 |
| 4" | 4 | 0.050 | 4.0466 | 102.78 | 3.8842 |