ASTM A449-04b
(Specification)Specification for Hex Cap Screws, Bolts, and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use
Specification for Hex Cap Screws, Bolts, and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use
SCOPE
1.1 This specification covers the chemical and mechanical requirements for two types of quenched and tempered steel bolts and studs for general applications where high strength is required.
1.2 The two types of bolts covered in this specification are:
1.2.1 Type 1—Medium-carbon steel bolts and studs furnished in nominal diameters of 1/4 to 3 in., inclusive.
1.2.2 Type 2—Low-carbon martensite or medium-carbon martensite steel bolts and studs furnished in nominal diameters of 1/4to 1 in., inclusive.
1.3 The bolts and studs shall be Type 1, Type 2, or Type 1 or 2 at manufacturer's option, as specified by the purchaser. When a type is not specified, Type 1 shall be furnished. When elevated temperature applications are involved, Type 1 shall be specified by the purchaser on the order.
1.4 Suitable nuts are covered in Specification A 563. Unless otherwise specified, the grade and style of nut shall be as follows:Fastener Size and Surface Finish Nut Grade and Style 1/4 to 11/2 in., plain (or with a coating of insufficient thickness to require over-tapped nuts) B, hex Over 11/2 to 3 in., plain (or with a coating of insuffi-cient thickness to require over-tapped nuts) A, heavy hex1/4 to 3 in., zinc-coated (or with a coating thicknessrequiring over-tapped nuts) DH, heavy hex Nuts of other grades and styles having specified proof load stresses (Specification A 563, Table 3) greater than the specified grade and style of nut are suitable.
1.5 Unless otherwise specified, washers ordered with bolts shall be furnished to the requirements of Specification F 436.
1.6 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
1.7 Terms used in this specification are defined in Terminology F 1789 unless otherwise defined herein.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: A 449 – 04b
Standard Specification for
Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/
1
105/90 ksi Minimum Tensile Strength, General Use
This standard is issued under the fixed designation A 449; 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* Iron and Steel Hardware
2 A 563 Specification for Carbon and Alloy Steel Nuts
1.1 This specification covers quenched and tempered steel
A 751 Test Methods, Practices, and Terminology for
hex cap screws, bolts, and studs having a minimum tensile
Chemical Analysis of Steel Products
strengthof120ksifordiameters1.0in.andsmaller;105ksifor
1 3 B 695 Specification for Coatings of Zinc Mechanically
diameters over 1.0 in. to 1 ⁄2 in.; and 90 ksi for diameters 1 ⁄4
Deposited on Iron and Steel
in. to 3.0 in. inclusive.The term 9fasteners9 in this specification
D 3951 Practice for Commercial Packaging
denotes hex cap screws, bolts, and studs.
F 436 Specification for Hardened Steel Washers
1.2 The fasteners are intended for general engineering use.
1 F 606 Test Methods for Determining the Mechanical Prop-
1.3 The fasteners are furnished in diameters ⁄4 to 3.0 in.
erties of Externally and Internally Threaded Fasteners,
inclusive. They are designated by type denoting chemical
Washers, and Rivets
composition as follows:
F 788/F 788M Specification for Surface Discontinuities of
Type Description
Bolts, Screws, and Studs, Inch and Metric Series
Type I Plain carbon steel, carbon boron steel, alloy
F 1470 GuideforFastenerSamplingforSpecifiedMechani-
steel, or alloy boron steel
cal Properties and Performance Inspection
Type 2 Withdrawn 2003
F 1789 Terminology for F16 Mechanical Fasteners
F 1941 Specification for Electrodeposited Coatings on
Threaded Fasteners (Unified Inch Screw Threads (UN/
1.4 Terms used in this specification are defined in Termi-
UNR))
nology F 1789 unless otherwise defined in this specification.
4
2.2 ANSI/ASME Standards:
1.5 The values stated in inch-pound units are to be regarded
B 1.1 Unified Screw Threads
as the standard. The values given in parentheses are provided
B 18.2.1 Square and Hex Bolts and Screws
for information purposes only.
B 18.24.1 Part Identifying Number (PIN) Code System
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Ordering Information
responsibility of the user of this standard to establish appro-
3.1 Orders for fasteners under this specification shall in-
priate safety and health practices and determine the applica-
clude the following:
bility of regulatory limitations prior to use.
3.1.1 Quantity (number of pieces),
3.1.2 Size, including nominal diameter and length,
2. Referenced Documents
3 3.1.3 Name of product,
2.1 ASTM Standards:
3.1.4 Type, that is, Type 1,
A 153/A 153M Specification for Zinc Coating (Hot-Dip) on
3.1.5 ASTM designation and year of issue, and
3.1.6 Other components such as nuts and washers if re-
quired
1
This specification is under the jurisdiction of ASTM Committee F16 on
3.1.7 Hot-Dip or Mechanically Deposited Zinc Coatings—
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
Forhot-dipormechanicallydepositedzinccoatingscoveredby
Nuts, Rivets, and Washers.
Current edition approved Nov. 1, 2004. Published February 2005. Originally
5.1 and requiring over-tapped nuts, specify the zinc coating
approved in 1963. Last previous edition approved in 2004 as A 449 – 04a.
processrequired,thatis,hot-dip,mechanicallydeposited,orno
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
preference (see 5.1).
cations SA-449 in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4
Standards volume information, refer to the standard’s Document Summary page on Available from American Society of Mechanical Engineers (ASME), ASME
the ASTM website. International Headquarters, Three Park Ave., New York, NY 10016-5990.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A 449 – 04b
3.1.8 Other Coatings—Specify other protective coating if 5.1.3 When mechanically deposited is specified, the fasten-
required (see 5.2). ers shall be zinc coated by the mechanical deposition process
in accordance with the requireme
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.