Standard Specification for “Twist Off” Type Tension Control Structural Bolt/Nut/Washer Assemblies, Alloy Steel, Heat Treated, 200 ksi Minimum Tensile Strength

SIGNIFICANCE AND USE
A2.4 Significance and Use
A2.4.1 This test method describes the testing procedure that shall be used to qualify material for use in ASTM F3043 bolts made of any steel composition permitted by this specification. The test method measures the susceptibility of the material to the influence of an externally applied potential (see A2.7.2.3.2) by testing for the threshold of embrittlement in a salt solution environment.
SCOPE
1.1 This specification covers one style of heat treated, alloy steel, tension control bolt-nut-washer assemblies, also referred to as “sets,” having a tensile strength of 200 to 215 ksi. These assemblies are capable of developing a minimum predetermined tension when installed by applying torque to the nut, while at the same time applying a counter torque to separate the spline end from the body of the bolt using an appropriate spline drive installation tool.  
1.2 An assembly consists of a tension control bolt with spline end, nut and washer covered by this specification.  
1.3 The assemblies are available with round heads described in Section 10, in sizes 1 in. to 11/4 in. inclusive.  
1.4 The fastener assemblies are intended for use in structural connections in the following environmental conditions:  
1.4.1 Interiors, normally dry, including interiors where structural steel is embedded in concrete, encased in masonry or protected by membrane or noncorrosive contact type fireproofing.  
1.4.2 Interiors and exteriors, normally dry, under roof, where the installed assemblies are soundly protected by a shop-applied or field-applied coating to the structural steel system.  
1.5 The fastener assemblies are not intended for use in structural connections in the following environments, with or without protection by a shop-applied or field-applied coating to the structural steel system:  
1.5.1 Exteriors not under roof.  
1.5.2 Chemical environments in which strong concentrations of highly corrosive gases, fumes, or chemicals, either in solution or as concentrated liquids or solids, contact the fasteners or their protective coating.  
1.5.3 Heavy industrial environments severe enough to be classified as a chemical environment as described in 1.5.2.  
1.5.4 Condensation and high humidity environments maintaining almost continuous condensation, including submerged in water and soil.  
1.5.5 Cathodically protected environments, in which current is applied to the structural steel system by the sacrificial anode method or the DC power method.  
1.6 Units—The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 The following precautionary statement pertains only to the test method portions, Section 15, Section 16 and Annex A2 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.

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ASTM F3043-14 - Standard Specification for “Twist Off” Type Tension Control Structural Bolt/Nut/Washer Assemblies, Alloy Steel, Heat Treated, 200 ksi Minimum Tensile Strength
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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:F3043 −14
StandardSpecification for
“Twist Off” Type Tension Control Structural Bolt/Nut/Washer
Assemblies, Alloy Steel, Heat Treated, 200 ksi Minimum
1,2
Tensile Strength
This standard is issued under the fixed designation F3043; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.5.2 Chemical environments in which strong concentra-
tions of highly corrosive gases, fumes, or chemicals, either in
1.1 This specification covers one style of heat treated, alloy
solution or as concentrated liquids or solids, contact the
steel, tension control bolt-nut-washer assemblies, also referred
fasteners or their protective coating.
to as “sets,” having a tensile strength of 200 to 215 ksi. These
1.5.3 Heavy industrial environments severe enough to be
assemblies are capable of developing a minimum predeter-
classified as a chemical environment as described in 1.5.2.
mined tension when installed by applying torque to the nut,
1.5.4 Condensation and high humidity environments main-
whileatthesametimeapplyingacountertorquetoseparatethe
taining almost continuous condensation, including submerged
splineendfromthebodyoftheboltusinganappropriatespline
in water and soil.
drive installation tool.
1.5.5 Cathodicallyprotectedenvironments,inwhichcurrent
1.2 An assembly consists of a tension control bolt with
is applied to the structural steel system by the sacrificial anode
spline end, nut and washer covered by this specification.
method or the DC power method.
1.3 Theassembliesareavailablewithroundheadsdescribed
1.6 Units—The values stated in inch-pound units are to be
1
in Section 10, in sizes 1 in. to 1 ⁄4 in. inclusive.
regarded as standard. No other units of measurement are
included in this standard.
1.4 The fastener assemblies are intended for use in struc-
1.7 The following precautionary statement pertains only to
tural connections in the following environmental conditions:
the test method portions, Section 15, Section 16 and Annex A2
1.4.1 Interiors, normally dry, including interiors where
of this Specification: This standard does not purport to address
structural steel is embedded in concrete, encased in masonry or
all of the safety concerns, if any, associated with its use. It is
protected by membrane or noncorrosive contact type fireproof-
the responsibility of the user of this standard to establish
ing.
appropriate safety and health practices and determine the
1.4.2 Interiors and exteriors, normally dry, under roof,
applicability of regulatory limitations prior to use.
where the installed assemblies are soundly protected by a
shop-applied or field-applied coating to the structural steel
2. Referenced Documents
system.
3
2.1 ASTM Standards:
1.5 The fastener assemblies are not intended for use in
A751 Test Methods, Practices, and Terminology for Chemi-
structural connections in the following environments, with or
cal Analysis of Steel Products
withoutprotectionbyashop-appliedorfield-appliedcoatingto
E709 Guide for Magnetic Particle Testing
the structural steel system:
E1444 Practice for Magnetic Particle Testing
1.5.1 Exteriors not under roof.
F606 Test Methods for Determining the Mechanical Proper-
ties of Externally and Internally Threaded Fasteners,
Washers, Direct Tension Indicators, and Rivets
1
This specification is under the jurisdiction of ASTM Committee F16 on F788/F788M Specification for Surface Discontinuities of
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
Bolts, Screws, and Studs, Inch and Metric Series
Nuts, Rivets and Washers.
F812/F812M Specification for Surface Discontinuities of
Current edition approved Oct. 1, 2014. Published December 2014. DOI:
Nuts, Inch and Metric Series
10.1520/F3043-14.
2
The "Twist Off" Type Tension Control Structural Bolt/Nut/WasherAssemblies,
Alloy Steel, Heat Treated, 200 ksi Minimum Tensile Strength of Grade 2 is covered
3
byUSpatentnumber7070664,July4,2006.Interestedpartiesareinvitedtosubmit For referenced ASTM standards, visit the ASTM website, www.astm.org, or
information regarding the identification of an alternative(s) to this patented item to contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the ASTM International Headquarters. Your comments will receive careful consid- Standards volume information, refer to the standard’s Document Summary page on
eration at a meeting of the responsible technical committee, which you may attend. the ASTM website.
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