ASTM A325-04a
(Specification)Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength
Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength
SCOPE
1.1 This specification covers two types of quenched and tempered steel structural bolts having a minimum tensile strength of 120 ksi for sizes 1.0 in. and less and 105 ksi for sizes over 1.0 to 1½ in., inclusive.
1.2 The bolts are intended for use in structural connections. These connections are covered under the requirements of the Specification for Structural Joints Using ASTM A 325 or A 490 Bolts, approved by the Research Council on Structural Connections of the Engineering Foundation.
1.3 The bolts are furnished in sizes ½ to 1½ in., inclusive. They are designated by type, denoting chemical composition as follows:Type Description Type 1 Medium carbon, carbon boron, or medium carbon alloy steel. Type 2 Withdrawn in November 1991. Type 3 Weathering steel.
Note 1—Bolts for general applications, including anchor bolts, are covered by Specification A 449. Also refer to Specification A 449 for quenched and tempered steel bolts and studs with diameters greater than 1½ in., but with similar mechanical properties.
Note 2—A complete metric companion to Specification A 325 has been developed—Specification A 325M; therefore no metric equivalents are presented in this specification.
1.4 The specification is applicable to heavy hex structural bolts only. For bolts of other configurations and thread lengths with similar mechanical properties, see Specification A449.
1.5 Terms used in this specification are defined in Specification F1789.
1.6 The following safety hazards caveat pertains only to the test methods portion, Section 10 , of this specification:This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
American Association
Designation: A 325 – 04a State Highway and
Transportation Officials
Standard AASHTO No.: M 164
Standard Specification for
Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum
1
Tensile Strength
This standard is issued under the fixed designation A 325; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* standard does not purport to address all of the safety concerns,
2 if any, associated with its use. It is the responsibility of the user
1.1 This specification covers two types of quenched and
of this standard to establish appropriate safety and health
tempered steel heavy hex structural bolts having a minimum
practices and determine the applicability of regulatory limita-
tensile strength of 120 ksi for sizes 1.0 in. and less and 105 ksi
1 tions prior to use.
for sizes over 1.0 to 1 ⁄2 in., inclusive.
1.2 The bolts are intended for use in structural connections.
2. Referenced Documents
These connections are covered under the requirements of the
4
2.1 ASTM Standards:
Specification for Structural Joints Using ASTM A 325 or A 490
A 153/A 153M Specification for Zinc Coating (Hot-Dip) on
Bolts, approved by the Research Council on Structural Con-
Iron and Steel Hardware
nections, endorsed by the American Institute of Steel Construc-
3 A 194/A 194M Specification for Carbon and Alloy Steel
tion and by the Industrial Fastener Institute.
Nuts for Bolts for High Pressure or High Temperature
1 1
1.3 The bolts are furnished in sizes ⁄2 to 1 ⁄2 in., inclusive.
Service, or Both
They are designated by type, denoting chemical composition as
A 449 Specification for Quenched and Tempered Steel
follows:
Bolts and Studs
Type Description
A 490 Specification for Structural Bolts, Alloy Steel, Heat
Treated, 150 ksi Minimum Tensile Strength
Type 1 Medium carbon, carbon boron, or medium carbon alloy steel.
A 563 Specification for Carbon and Alloy Steel Nuts
Type 2 Withdrawn in November 1991.
A 751 Test Methods, Practices, and Terminology for
Type 3 Weathering steel.
Chemical Analysis of Steel Products
NOTE 1—Bolts for general applications, including anchor bolts, are
B 695 Specification for Coatings of Zinc Mechanically
covered by Specification A 449. Also refer to Specification A 449 for
Deposited on Iron and Steel
quenched and tempered steel bolts and studs with diameters greater than
1
1 ⁄2 in. but with similar mechanical properties. D 3951 Practice for Commercial Packaging
NOTE 2—A complete metric companion to Specification A 325 has
F 436 Specification for Hardened Steel Washers
been developed—Specification A 325M; therefore, no metric equivalents
F 606 Test Methods for Determining the Mechanical Prop-
are presented in this specification.
erties of Externally and Internally Threaded Fasteners,
1.4 This specification is applicable to heavy hex structural
Washers, and Rivets
bolts only. For bolts of other configurations and thread lengths
F 788/F 788M Specification for Surface Discontinuities of
with similar mechanical properties, see Specification A 449.
Bolts, Screws, and Studs, Inch and Metric Series
1.5 Terms used in this specification are defined in Termi-
F 959 Specification for Compressible-Washer-Type Direct
nology F 1789.
Tension Indicators for Use with Structural Fasteners
1.6 The following safety hazard caveat pertains only to the
F 1470 Guide for Fastener Sampling for Specified Mechani-
test methods portion, Section 10, of this specification: This
cal Properties and Performance Inspection
F 1789 Terminology for F16 Mechanical Fasteners
G 101 Guide for Estimating the Atmospheric Corrosion
1
Resistance of Low-Alloy Steels
This specification is under the jurisdiction of ASTM Committee F16 on
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
Nuts, Rivets, and Washers.
Current edition approved Aug. 1, 2004. Published August 2004. Originally
approved in 1964. Last previous edition approved in 2004 as A 325 – 04.
2 4
For ASME Boiler and Pressure Vessel Code applications see related Specifi- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
cation SA-325 in Section II of that Code. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Published by American Institute of Steel Construction,One East Wacker Dr., Standards volume information, refer to the standard’s Document Summary page on
Ste. 3100, Chicago, IL 60601-2001. the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Dri
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.