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ASTM F1554 Anchor Bolts Specification

Carbon Steel & Alloy Steel Straight, bent, headed, and headless anchor bolts with 36, 55 & 105 ksi strength

Related Specifications of ASTM F1554 Bolting

A194 A307 A563 F436

ASTM A449 Classification

Grade Classs Description
Tensile Strength, ksi (MPa) Yield Strength, min, ksi (MPa) Diameter Range, in.
ASTM F1554 Grade 36   1A/2A Threads 58-80 (400-558) 36 (248) 1/2 -4
ASTM F1554 Grade 55 1A/2A Threads 75-95 (517-655) 55 (380) 1/2 -4
ASTM F1554 Grade 105 1A/2A Threads 125-150 (862-1034) 105 (724) 1/2 -3

ASTM A449 Chemical Composition Requirements

Element Analysis Grade 36 Grades 55 and 105
Diameters up to 3/4 , incl Over 7/8 to 4, inclA All Diameters
C, max, % Heat 0.25 0.25 ...
Product 0.28 0.28 ...
Mn, max %
Heat ... 0.90 ...
Product ... 0.98 ...
P, max, % Heat 0.04 0.04 0.04
Product 0.05 0.05 0.048†
S, max, % Heat 0.05 0.05 0.05
Product 0.06 0.06 0.058
Cu, min, % (when specified) Heat 0.20 0.20 0.20
Product 0.18 0.18 0.18
  • (A) For each reduction of 0.01 % below the specified Carbon maximum, an increase of 0.06 % Manganese above the specified maximum is permitted, up to a maximum of 1.35 % Mn.

ASTM A449 Mechanical Requirements

ASTM A449 Materials and Manufacture

Anchor Bolt Size. Plain Uncoated Nuts Hot-Dip / Mechanical Zinc Coated Nuts
Grade Diameter, in. Grade  Style Grade  Style
ASTM F1554 Grade 36 1/2 -11/2 ASTM F1554 Grade A Hex ASTM F1554 Grade A Hex
over 11/2 ASTM F1554 Grade A Heavy Hex ASTM F1554 Grade A Heavy Hex
ASTM F1554 Grade 55 1/2 -11/2 ASTM F1554 Grade A Hex ASTM F1554 Grade A Heavy Hex
over 11/2 -4 ASTM F1554 Grade A Heavy Hex ASTM F1554 Grade A Heavy Hex
ASTM F1554 Grade 105 All ASTM F1554 Grade DH Heavy Hex ASTM F1554 Grade DH Heavy Hex
  • (A) See Note 3 and Section 7.

ASTM A449 Axial Tensile Properties for Full-Size Tests of Anchor Bolts and Drawn Coupons A Unified Coarse Thread Series (UNC)

Nominal Diameter, in. Threads/ in. Stress Area,B in.2 Anchor Bolt Grade
36 55 105
Tensile Strength, lbf Yield, min, lbf Tensile Load, lbf Yield min, lbf Tensile Load, lbf Yield min, lbf
1/2 13 UNC 0.1419 8 200-11 400 5 100 10 600-13 500 7 800 17 700-21 300 14 900
5/8 11 UNC 0.226 13 100-18 100 8 100 17 000-21 500 12 400 28 200-33 900 23 700
3/4 10 UNC 0.334 19 400-26 700 12 000 25 000-31 700 18 400 41 800-50 100 35 100
7/8 9 UNC 0.462 26 800-37 000 16 600 34 600-43 900 25 400 57 800-69 300 48 500
1 8 UNC 0.606 35 200-48 500 21 800 45 400-57 600 33 300 75 800-90 900 63 600
11/8 7 UNC 0.763 44 300-61 000 27 500 57 200-72 500 42 000 95 400-114 400 80 100
11/4 7 UNC 0.969 56 200-77 500 34 900 72 700-92 100 53 300 121 000-145 000 102 000
11/2 6 UNC 1.405 81 500-112 400 50 600 105 000-133 000 77 300 176 000-216 000 148 000
13/4 5 UNC 1.90 110 000-152 000 68 400 142 000-180 000 104 500 238 000-285 000 200 000
2 41/2 UNC 2.50 145 000-200 000 90 000 188 000-238 000 138 000 312 000-375 000 262 000
21/4 41/2 UNC 3.25 188 000-260 000 117 000 244 000-309 000 179 000 406 000-488 000 341 000
21/2 4 UNC 4.00 232 000-320 000 144 000 300 000-380 000 220 000 500 000-600 000 420 000
23/4 4 UNC 4.93 286 000-394 000 177 000 370 000-468 000 271 000 616 000-740 000 518 000
3 4 UNC 5.97 346 000-478 000 215 000 448 000-567 000 328 000 746 000-896 000 627 000
31/4 4 UNC 7.10 412 000-568 000 256 000 532 000-674 000 390 000 . . . . . .
31/2 4 UNC 8.33 483 000-666 000 300 000 625 000-791 000 458 000 . . . . . .
33/4 4 UNC 9.66 560 000-773 000 348 000 724 000-918 000 531 000 . . . . . .
4 4 UNC 11.08 643 000-886 000 399 000 831 000-1 053 000 609 000 . . . . . .

ASTM A449 Axial Tensile Properties for Full-Size Tests of Anchor Bolts and Drawn CouponsA 8 Thread Series (8 UN)

Nominal Diameter, in. Threads/ in. Stress Area,B in.2 Anchor Bolt Grade
36 55 105
Tensile Strength, lbf Yield, min, lbf Tensile Load, lbf Yield min, lbf Tensile Load, lbf Yield min, lbf
11/8 8 UN 0.790 45 800-63 200 28 400 59 200-75 000 43 400 98 800-118 500 83 000
11/4 8 UN 1.000 58 000-80 000 36 000 75 000-95 000 55 000 125 000-150 000 105 000
11/2 8 UN 1.492 86 500-119 400 53 700 112 000-142 000 82 100 186 000-224 000 157 000
13/4 8 UN 2.08 121 000-166 000 74 900 156 000-198 000 114 000 260 000-312 000 218 000
2 8 UN 2.77 161 000-222 000 99 700 208 000-263 000 152 000 346 000-416 000 291 000
21/4 8 UN 3.56 206 000-285 000 128 000 267 000-338 000 196 000 445 000-534 000 374 000
21/2 8 UN 4.44 258 000-355 000 160 000 333 000-422 000 244 000 555 000-666 000 466 000
23/4 8 UN 5.43 315 000-434 000 195 000 407 000-516 000 299 000 679 000-815 000 570 000
3 8 UN 6.51 378 000-521 000 234 000 488 000-618 000 358 000 814 000-976 000 684 000
31/4 8 UN 7.69 446 000-615 000 277 000 577 000-731 000 423 000 . . . . . .
31/2 8 UN 8.96 520 000-717 000 323 000 672 000-851 000 493 000 . . . . . .
33/4 8 UN 10.34 600 000-827 000 372 000 776 000-982 000 569 000 . . . . . .
4 8 UN 11.81 685 000-945 000 425 000 886 000-1 122 000 650 000 . . . . . .
  • (A) Tensile properties calculated from the tensile requirements. Yield strength measured at 0.2% offset.
  • (B) Stress areas extracted from ASME B 1.1.

ASTM A449 Tensile Properties for Bars and Machined Specimens

 Tensile Properties 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
  • (A) Elongation in 8 in. applies to bars. Elongation in 2 in. applies to machined specimens.

ASTM A449 Minimum Body DiametersA Unified Coarse Thread Series (UNC)

Nominal Diameter, in. Threads/ in. Body Diameter, min, in.
Rolled ThreadsB Cut ThreadsCClasses 1A and 2A
Class 1A Class 2A
1/2 13 UNC 0.4411 0.4435 0.4822
5/8 11 UNC 0.5561 0.5589 0.6052
3/4 10 UNC 0.6744 0.6773 0.7288
7/8 9 UNC 0.7914 0.7946 0.8523
1 8 UNC 0.9067 0.9100 0.9755
11/8 7 UNC 1.0191 1.0228 1.0982
11/4 7 UNC 1.1439 1.1476 1.2232
11/2 6 UNC 1.3772 1.3812 1.4703
13/4 5 UNC 1.6040 1.6085 1.7165
2 41/2 UNC 1.8385 1.8433 1.9641
21/4 41/2 UNC 2.0882 2.0931 2.2141
21/2 4 UNC 2.3190 2.3241 2.4612
23/4 4 UNC 2.5686 2.5739 2.7111
3 4 UNC 2.8183 2.8237 2.9611
31/4 4 UNC 3.0680 3.0734 3.2110
31/2 4 UNC 3.3177 3.3233 3.4610
33/4 4 UNC 3.5674 3.5730 3.7109
4 4 UNC 3.8172 3.8229 3.9609

ASTM A449 Minimum Body DiametersA 8 Thread Series (8UN)

Nominal Diameter, in. Threads/ in. Body Diameter, min, in.
Rolled ThreadsB Cut ThreadsCClasses 1A and 2A
Class 1A Class 2A
11/8 8 UN . . . 1.0348 1.1004
11/4 8 UN . . . 1.1597 1.2254
11/2 8 UN . . . 1.4093 1.4753
13/4 8 UN . . . 1.6590 1.7252
2 8 UN . . . 1.9087 1.9752
21/4 8 UN . . . 2.1584 2.2251
21/2 8 UN . . . 2.4082 2.4751
23/4 8 UN . . . 2.6580 2.7250
3 8 UN . . . 2.9077 2.9749
31/4 8 UN . . . 3.1575 3.2249
31/2 8 UN . . . 3.4074 3.4749
33/4 8 UN . . . 3.6571 3.7248
4 8 UN . . . 3.9070 3.9748
  • (A) Extracted from ANSI/ASME B 1.1.
  • (B) Minimum body diameter is the same as minimum pitch diameter.
  • (C) Minimum body diameter is the same as minimum major diameter.

ASTM A449 Allowable Zinc Buildup on Coated Threads and Corresponding Thread Dimensions

ASTM A449 Allowable Zinc Buildup on Coated Threads and Corresponding Thread Dimensions

Nominal Diameter, in. Threads/in. Diametral Zinc Buildup, in.A Anchor Bolt Diameter, max, in.
Major Pitch
1/2 13 0.018 0.5165 0.4685
5/8 11 0.020 0.6434 0.5844
3/4 10 0.020 0.7682 0.7032
7/8 9 0.022 0.8951 0.8229
1 8 0.024 1.0220 0.9408
11/8 8 0.024 1.1469 1.0657
11/8 7 0.024 1.1468 1.0540
11/4 8 0.024 1.2719 1.1667
11/4 7 0.024 1.2718 1.5740
11/2 8 0.027 1.5248 1.4436
11/2 6 0.027 1.5246 1.4163
13/4 5 0.050 1.7973 1.6674
2 4.5 0.050 2.0471 1.9028
21/4 4.5 0.050 2.2971 2.1528
21/2 4 0.050 2.5469 2.3845
23/4 4 0.050 2.7968 2.6344
3 4 0.050 3.0468 2.8844
31/4 4 0.050 3.2967 3.1343
31/2 4 0.050 3.5467 3.3843
33/4 4 0.050 3.7966 3.6342
4 4 0.050 4.0466 3.8842
  • (A) These values are the same as the overtap requirements for zinc-coated nuts given in Specification A563.

ASTM A449 Weldable Grade 55 Bars and Anchor Bolts

Elements Heat Analysis Product Analysis
C, max, % 0.30 0.33
Mn, max, % 1.35 1.41
P, max, % 0.040 0.048
S, max, % 0.050 0.058
Si, max, % 0.50 0.55

ASTM A449 Permanent Grade Identification

Grade Identification
ASTM F1554 Grade 36 AB36
ASTM F1554 Grade 55 AB55
ASTM F1554 Grade 105 AB105
  • A mark shall be separate and distinct from any manufacturer's marks and shall be separated by at least two spaces when on the same level. See Note S2.1.

ASTM A449 Grades 55 and 105 Energy Requirements

Charpy V-Notch Energy Requirements
Average for 3 Specimens, min, ft·lbf Minimum for 1 Specimen, ft·lbf
15 12

ASTM F1554 Bolting Surface Treatment Specifications

ASTM F1554 Bolting Components Marking

Product Shall be Marked with our manufacturing trade mark "TorqBolt" or "TB" along with the designated Grade.
Grade and manufacturer’s identification symbols shall be applied to one end of studs and to the heads of bolts and screws of all sizes. (If the available area is inadequate, the grade symbol may be marked on one end and the manufacturer’s identification symbol marked on the other end.) For bolts and screws smaller than 1⁄4 in. [6 mm] in diameter and studs smaller than 3⁄8 in. [10 mm] in diameter and for 1⁄4 in. [6 mm] in diameter studs requiring more than a total of three symbols, the marking shall be a matter of agreement between the purchaser and the manufacturer.

Grade Color
ASTM F1554 Grade 36 Blue
ASTM F1554 Grade 55 Yellow
ASTM F1554 Grade 55- WeldableA Yellow (projecting end) & White (encased end)
ASTM F1554 Grade 105 Red

ASME Dimensional Standards

B18.31.2 Imperial Continious Thread, Double End Reduced & Full Body Studs
B18.31.3 Threaded Rods (Inch Series)
B16.5 Imperial & Metric Full Thread Stud Bolts
B16.5 Imperial & Metric Full Thread Stud Bolts
B18.2.1 Imperial Square and Hex Bolts and Screws
B18.3 Imperial Hexagon Socket and Spline Socket Screws
B18.2.2 Imperial Square, Hex, Heavy Hex, Lock, Heavy Hex Lock Nuts

ASTM F1554 Bolting Certifications

  • EN 10204 3.1
  • EN 10204 3.2
  • PED 2014/68/EC
  • MERKBLATT AD 2000 W2/W7/W10
  • API 20 E BSL 1/ BSL 2
  • NACE MR 0175
  • NACE MR 0103

ASTM F1554 Testing Standards

A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
E23 Test Methods for Notched Bar Impact Testing of Metallic Materials
E709 Guide for Magnetic Particle Testing
E1268 Practice for Assessing the Degree of Banding or Orientation of Microstructures
E1417/E1417M Practice for Liquid Penetrant Testing
E1444/E1444M Practice for Magnetic Particle Testing
E2884 Guide for Eddy Current Testing of Electrically Conducting Materials Using Conformable Sensor Arrays
F606/F606M Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
F788/F788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series
F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
F2328 Test Method for Determining Decarburization and Carburization in Hardened and Tempered, Threaded, Steel Bolts, Screws, Studs, and Nuts

ASME Threading Specifications

ASME B1.1 Unified Inch Screw Threads (UN and UNR Thread Form)
ASME B1.3 Screw Thread Gaging System for Dimensional Acceptability - Inch Screw Threads (IN, UNR, and UNJ)

ASTM F1554 Supplementary Requirements

S1 Weldable Grade 55 Bars and Anchor Bolts
S2 Permanent Manufacturer's Identification
S3 Permanent Grade Identification
S4 Grades 55 and 105 Charpy Absorbed-Energy Requirements