ASTM F1554

ASTM F1554 Anchor Bolts Specification

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

Related Specifications

Classification

Grade	Classs	Description
Grade	Classs	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

Chemical Composition

Element	Analysis	Grade 36		Grades 55 and 105
Element	Analysis	Diameters up to ³/₄ , incl	Over ⁷/₈ to 4, incl^A	All Diameters
C, max, %	Heat	0.25	0.25	…
C, max, %	Product	0.28	0.28	…
Mn, max %
	Heat	…	0.90	…
	Product	…	0.98	…
P, max, %	Heat	0.04	0.04	0.04
P, max, %	Product	0.05	0.05	0.048^†
S, max, %	Heat	0.05	0.05	0.05
S, max, %	Product	0.06	0.06	0.058
Cu, min, % (when specified)	Heat	0.20	0.20	0.20
Cu, min, % (when specified)	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.

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
ASTM F1554 Grade 36	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
ASTM F1554 Grade 55	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 Coupons^A 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
Tensile Properties	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 Diameters^A Unified Coarse Thread Series (UNC)

Nominal Diameter, in.	Threads/ in.	Body Diameter, min, in.
		Rolled Threads^B		Cut Threads^CClasses 1A and 2A
		Class 1A	Class 2A	Cut Threads^CClasses 1A and 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 Diameters^A 8 Thread Series (8UN)

Nominal Diameter, in.	Threads/ in.	Body Diameter, min, in.
		Rolled Threads^B		Cut Threads^CClasses 1A and 2A
		Class 1A	Class 2A	Cut Threads^CClasses 1A and 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

Nominal Diameter, in.	Threads/in.	Diametral Zinc Buildup, in.^A	Anchor Bolt Diameter, max, in.
Nominal Diameter, in.	Threads/in.	Diametral Zinc Buildup, in.^A	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
15	12

Coating Specifications

Renowned Brands

Bolting Components Marking

Product Shall be Marked with our manufacturing trade mark Adfast Component LTD 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- Weldable^A	Yellow (projecting end) & White (encased end)
ASTM F1554 Grade 105	Red

Dimensional Standards

B18.31.2 Imperial Continious Thread, Double End Reduced & Full Body Studs
B18.31.1M Metric Continious Thread, Double End Reduced & Full Body Studs
B16.5 Imperial Full Thread Stud Bolts
B16.5 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

Certification

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

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)

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

Product

Precision Components

Contract Manufacturing

Fastener

Resources

materials

Technical