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ASTM F568M-98

(Specification)

Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners

Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners

SCOPE
1.1 This specification covers chemical and mechanical requirements for nine property classes of carbon and alloy steel externally threaded metric fasteners in nominal thread diameters M1.6 through M100 suited for use in general engineering applications.  
1.2 This specification does not cover dimensional requirements for fasteners of any property class. When referencing this specification for procurement purposes, it is mandatory that size, type, style, and any special dimensions of the product be additionally specified.  
1.2.1 In case of any conflict in requirements, the requirements of the individual product specification shall take precedence over those of this general specification.  
1.2.2 The purchaser may specify additional requirements which do not negate any of the provisions of this general specification or of the individual product specification. Such additional requirements, the acceptance of which are subject to negotiation with the supplier, must be included in the order information (see Section 3).  
1.3 Requirements for seven of the nine property classes, 4.6, 4.8, 5.8, 8.8, 9.8, 10.9, and 12.9, are essentially identical with requirements given for these classes in ISO 898/I. The other two, 8.8.3 and 10.9.3, are not recognized in ISO standards.  
1.4 Classes 8.8.3 and 10.9.3 bolts, screws, and studs have atmospheric corrosion resistance and weathering characteristics comparable to those of the steels covered in Specification A588. The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition. See 5.2. When properly exposed to the atmosphere, these steels can be used bare (uncoated) for many applications.  
1.5 When agreed on by the purchaser, Class 5.8 fasteners may be supplied when either Classes 4.6 or 4.8 are ordered; Class 4.8 may be supplied when Class 4.6 is ordered; Class 8.8.3 may be supplied when Class 8.8 is ordered; and Class 10.9.3 may be supplied when Class 10.9 is ordered.  
1.6 The product size range for which each property class is applicable is given in Table 1 on chemical composition requirements, and the mechanical requirements table.  
1.7 Appendix X1 gives conversion guidance to assist designers and purchasers in the selection of a suitable property class.  
1.8 Appendix X2 explains the significance of the property class designation numerals.

General Information

Status
Historical
Publication Date
09-Dec-1998
ICS
21.060.10 - Bolts, screws, studs
Technical Committee
F16 - Fasteners
Drafting Committee
F16.02 - Steel Bolts, Studs and Nuts
Current Stage
Ref Project

Relations

Replaced By
ASTM F568M-02 - Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners
Effective Date
10-Oct-2002

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ASTM F568M-98 - Standard Specification for Carbon and Alloy Steel Externally Threaded Metric FastenersASTM F568M-98 - Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners
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ASTM F568M-98 - Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners
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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: F 568M – 98
METRIC
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Carbon and Alloy Steel Externally Threaded Metric
1
Fasteners
This standard is issued under the fixed designation F 568M; 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 * 10.9.3 may be supplied when Class 10.9 is ordered.
1.6 The product size range for which each property class is
1.1 This specification covers chemical and mechanical re-
applicable is given in Table 1 and Table 2 on chemical
quirements for nine property classes of carbon and alloy steel
composition requirements, and the mechanical requirements
externally threaded metric fasteners in nominal thread diam-
table (see Table 3).
eters M1.6 through M100 suited for use in general engineering
1.7 Appendix X1 gives conversion guidance to assist de-
applications.
signers and purchasers in the selection of a suitable property
1.2 This specification does not cover dimensional require-
class.
ments for fasteners of any property class. When referencing
1.8 Appendix X2 explains the significance of the property
this specification for procurement purposes, it is mandatory
class designation numerals.
that size, type, style, and any special dimensions of the product
be additionally specified.
2. Referenced Documents
1.2.1 In case of any conflict in requirements, the require-
2.1 ASTM Standards:
ments of the individual product specification shall take prece-
A 153 Specification for Zinc Coating (Hot-Dip) on Iron and
dence over those of this general specification.
2
Steel Hardware
1.2.2 The purchaser may specify additional requirements
A 307 Specification for Carbon Steel Bolts and Studs,
which do not negate any of the provisions of this general
3
60 000 psi Tensile Strength
specification or of the individual product specification. Such
A 325 Specification for Structural Bolts, Steel, Heat
additional requirements, the acceptance of which are subject to
3
Treated, 120/105 ksi Minimum Tensile Strength
negotiation with the supplier, must be included in the order
A 325M Specification for High-Strength Bolts for Struc-
information (see Section 3).
3
tural Steel Joints [Metric]
1.3 Requirements for seven of the nine property classes, 4.6,
A 354 Specification for Quenched and Tempered Alloy
4.8, 5.8, 8.8, 9.8, 10.9, and 12.9, are essentially identical with
Steel Bolts, Studs, and Other Externally Threaded Fasten-
requirements given for these classes in ISO 898/I. The other
3
ers
two, 8.8.3 and 10.9.3, are not recognized in ISO standards.
A 449 Specification for Quenched and Tempered Steel
1.4 Classes 8.8.3 and 10.9.3 bolts, screws, and studs have
3
Bolts and Studs
atmospheric corrosion resistance and weathering characteris-
A 490 Specification for Heat-Treated Steel Structural Bolts,
tics comparable to those of the steels covered in Specification
3
150 ksi Minimum Tensile Strength
A 588. The atmospheric corrosion resistance of these steels is
A 490M Specification for High-Strength Steel Bolts,
substantially better than that of carbon steel with or without
Classes 10.9 and 10.9.3, for Structural Steel Joints [Met-
copper addition. See 5.2. When properly exposed to the
3
ric]
atmosphere, these steels can be used bare (uncoated) for many
A 574 Specification for Alloy Steel Socket-Head Cap
applications.
3
Screws
1.5 When agreed on by the purchaser, Class 5.8 fasteners
A 588/A588M Specification for High-Strength Low-Alloy
may be supplied when either Classes 4.6 or 4.8 are ordered;
Structural Steel with 50 ksi [345 MPa] Minimum Yield
Class 4.8 may be supplied when Class 4.6 is ordered; Class
4
Point to 4 in. [100 mm] Thick
8.8.3 may be supplied when Class 8.8 is ordered; and Class
A 751 Test Methods, Practices, and Terminology for
1
This specification is under the jurisdiction of ASTM Committee F-16 on
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
2
Nuts, Rivets and Washers. Annual Book of ASTM Standards, Vol 01.06.
3
Current edition approved Dec. 10, 1998. Published February 1999. Originally Annual Book of ASTM Standards, Vol 15.08.
4
published as F 568 – 79. Last previous edition F 568 – 96. Annual Book of ASTM Standards, Vol 01.04.
*A Summary of Changes section appears at the end of this standard.
1

---------------------- Page: 1 ----------------------
NOTICE:¬This¬standard¬has¬either¬been¬superseded¬and¬replaced¬by¬a¬new¬version¬or
disconti
...

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This specification provides the chemical, physical and mechanical requirements for quenched and tempered bolts manufactured from steel and alloy steel, in inch and metric dimensions, in two strength grades, two types and two styles. It is intended to ensure alignment between standards with the same intended end use and to simplify the use and maintenance of structural bolt specifications.
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This specification covers the chemical and mechanical requirements for three grades (Grades A, B, and C) of carbon steel bolts and studs in specified sizes. This specification does not cover the requirements for machine screws, thread cutting/forming screws, mechanical expansion anchors, or other similar externally threaded fasteners. When tested, sampled specimens shall adhere to specified values for chemical composition, hardness, tensile strength, yield point, elongation, and dimensions.
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1.1 This specification2 covers the chemical and mechanical requirements of two grades of carbon steel bolts and studs in sizes 1/4 in. through 4 in. The fasteners are designated by “Grade” denoting tensile strength and intended use, as follows:    
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Bolts, studs, and threaded rod having a minimum tensile strength of 60 ksi and intended for general applications,  
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Grade C  
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1.3 Suitable nuts are covered in Specification A563. Unless otherwise specified, the grade and style of nut for each grade of fastener, of all surface finishes, shall be as follows:    
Fastener Grade and Size  
Nut Grade and StyleA    
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A, hex  
A over 11/2 to 4 in.  
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B, 1/4 to 4 in.  
A, heavy hex    
1.4 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 Supplementary Requirement S1 of an optional nature is provided, which describes additional restrictions to be applied when bolts are to be welded. It shall apply only when specified in the inquiry, order, and contract.  
1.6 Terms used in this specification are defined in Terminology F1789 unless otherwise defined herein.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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This specification covers the chemical, mechanical, and dimensional requirements, and associated test methods for straight and bent, headed and headless anchor bolts (also known as anchor rods) made of carbon, carbon boron, alloy, or high-strength low-alloy steel and having specified yield strengths. The anchor bolts are furnished in three strength grades, two thread classes, and various sizes, and are intended for anchoring structural supports to concrete foundations such as building columns, column supports for highway signs, street lighting and traffic signals, steel bearing plates, and similar applications. This specification, however, does not cover the requirements for mechanical expansion anchors, powder-activated nails or studs, and anchor bolts fabricated from deformed bars. The bolts shall adhere to specified elemental chemical compositions as examined by heat and product analysis. They shall also be tested for their conformance with mechanical properties such as tensile strength, yield strength, elongation, reduction of area, and stress area. The anchor bolts shall also meet specified values for nominal size, body diameter, bend section, length, bend angle, and coated length.
SCOPE
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1.7 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM F541-12(2020)(Specification)
Standard Specification for Alloy Steel Eyebolts

ABSTRACT
This specification covers the basic requirements and corresponding test methods for forged, quenched, and tempered, alloy steel threaded eyebolts with improved toughness properties and that are chemically and metallurgically constituted to produce a low transition temperature to minimize brittle failure, intended primarily for low temperature applications. The eyebolts are furnished either as straight shank eyebolts (Type 1), or shoulder eyebolts (Type 2). Sampled specimens shall be tested, and conform accordingly to chemical (carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and nickel), metallurgical (grain size, decarburization, and macrotech properties), and mechanical (Brinell hardness, tensile strength, breaking strength, proof load, impact strength, and bend strength) requirements.
SCOPE
1.1 This specification covers forged, quenched and tempered, alloy steel threaded eyebolts with improved toughness properties and intended primarily for low temperature applications. The eyebolts are chemically and metallurgically constituted to produce a low transition temperature to minimize brittle failure. Maximum thread size is 2.500 in. (63.50 mm).  
1.2 The eyebolts are furnished in two types, as follows:  
1.2.1 Type 1—Straight Shank Eyebolt.  
1.2.2 Type 2—Shoulder Eyebolt.  
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