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ASTM F606-06

(Test Method)

Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets

Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets

SCOPE
1.1 These test methods cover establishment of procedures for conducting tests to determine the mechanical properties of externally and internally threaded fasteners, washers, direct tension indicators, and rivets.
1.2 Property requirements and the applicable tests for their determination are specified in individual product standards. In those instances where the testing requirements are unique or at variance with these standard procedures, the product standard shall specify the controlling testing requirements.
1.3 These test methods describe mechanical tests for determining the following properties:
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.
A complete metric companion to Test Methods F 606 has been developed-F 606M; therefore, no metric equivalents are shown in these test methods.

General Information

Status
Historical
Publication Date
14-Aug-2006
ICS
21.060.01 - Fasteners in general
Technical Committee
F16 - Fasteners
Drafting Committee
F16.01 - Test Methods
Current Stage
Ref Project

Relations

Replaces
ASTM F606-05 - Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, and Rivets
Effective Date
15-Aug-2006
Replaced By
ASTM F606-07 - Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
Effective Date
01-Sep-2007
Referred By
ASTM F3111-16 - Standard Specification for Heavy Hex Structural Bolt/Nut/Washer Assemblies, Alloy Steel, Heat Treated, 200 ksi Minimum Tensile Strength
Effective Date
15-Aug-2006
Referred By
ASTM F1624-12(2018) - Standard Test Method for Measurement of Hydrogen Embrittlement Threshold in Steel by the Incremental Step Loading Technique
Effective Date
15-Aug-2006
Referred By
ASTM F837-20 - Standard Specification for Stainless Steel Socket Head Cap Screws
Effective Date
15-Aug-2006
Referred By
ASTM F3043-15 - Standard Specification for “Twist Off” Type Tension Control Structural Bolt/Nut/Washer Assemblies, Alloy Steel, Heat Treated, 200 ksi Minimum Tensile Strength
Effective Date
15-Aug-2006
Referred By
ASTM F3019/F3019M-19 - Standard Specification for Chromium Free Zinc-Flake Composite, with or without Integral Lubricant, Corrosion Protective Coatings for Fasteners
Effective Date
15-Aug-2006

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ASTM F606-06 - Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and RivetsASTM F606-06 - Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
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ASTM F606-06 - Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
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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:F606–06
Standard Test Methods for
Determining the Mechanical Properties of Externally and
Internally Threaded Fasteners, Washers, Direct Tension
1
Indicators, and Rivets
This standard is issued under the fixed designation F606; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1.1 These test methods cover establishment of procedures
bility of regulatory limitations prior to use.
for conducting tests to determine the mechanical properties of
externally and internally threaded fasteners, washers, direct
NOTE 1—A complete metric companion to Test Methods F606 has
tension indicators, and rivets. been developed—F606M; therefore, no metric equivalents are shown in
these test methods.
1.2 Property requirements and the applicable tests for their
determination are specified in individual product standards. In
2. Referenced Documents
those instances where the testing requirements are unique or at
2
2.1 ASTM Standards:
variance with these standard procedures, the product standard
A394 Specification for Steel Transmission Tower Bolts,
shall specify the controlling testing requirements.
Zinc-Coated and Bare
1.3 These test methods describe mechanical tests for deter-
E4 Practices for Force Verification of Testing Machines
mining the following properties:
E8 Test Methods for Tension Testing of Metallic Materials
Section
For Externally Threaded Fasteners: 3 E10 Test Method for Brinell Hardness of Metallic Materi-
Product Hardness 3.1
als
Proof Load 3.2.1
E18 Test Methods for Rockwell Hardness and Rockwell
Method 1, Length Measurement 3.2.3
Method 2, Yield Strength 3.2.4
Superficial Hardness of Metallic Materials
Method 3, Uniform Hardness 3.2.5
E83 Practice for Verification and Classification of Exten-
Axial Tension Testing of Full-Size Product 3.4
someter Systems
Wedge Tension Testing of Full-Size Product 3.5
Tension Testing of Machined Test Specimens 3.6 E92 Test Method for Vickers Hardness of Metallic Mate-
Total Extension at Fracture Test 3.7
rials
Single Sheer Test 3.8
E384 Test Method for Microindentation Hardness of Ma-
For Internally Threaded Fasteners: 4
Product Hardness 4.1 terials
Proof Load Test 4.2
F436 Specification for Hardened Steel Washers
Cone Proof Load Test 4.3
F606M Test Methods for Determining the Mechanical
For Washers and Direct Tension Indicators: 5
Product Hardness-General Requirements 5.1
PropertiesofExternallyandInternallyThreadedFasteners,
Through Hardened Washers 5.2
Washers, and Rivets [Metric]
Carburized Washers 5.3
F959 Specification for Compressible-Washer-Type Direct
Stainless Steel and Nonferrous Washers 5.4
Direct Tension Indicators 5.5
Tension Indicators for Use with Structural Fasteners
Compression Load 5.6
F1624 Test Method for Measurement of Hydrogen Em-
For Rivets: 6
brittlement Threshold in Steel by the Incremental Step
Product Hardness 6.1
Test for Embrittlement of Metallic-Coated Externally Threaded 7
Loading Technique
Fasteners 3
2.2 Military Standard:
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
2
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
Standards volume information, refer to the standard’s Document Summary page on
1
These test methods are under the jurisdiction of ASTM Committee F16 on the ASTM website.
3
FastenersandarethedirectresponsibilityofSubcommitteeF16.01onTestMethods. Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
Current edition approved Aug. 15, 2006. Published August 2006. Originally Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
approved in 1979. Last previous edition approved in 2005 as F606–05. www.dodssp.daps.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F606–06
MIL STD1312, Test 13 and Test 20 oneendofthestud.Fourreadingsshallbetakenfromthepoint
end of the bolt or one end of the stud. Four readings shall be
3. Test Methods for Externally Threaded Fasteners
taken approximately 90° to one another on the same plane, if
product size permits. Smaller diameter products may also use
3.1 Product Hardness—Tests shall be conducted after the
the opposite parallel surface area of the bolt head end as
...

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This specification establishes quality assurance requirements for carbon and alloy steel wire, rods, and bars for mechanical fasteners. Manufacturing of materials shall conform to the melting, casting, deoxidation, grain size, hardenability, and thermal treatment practices of this specification. Chemical requirements shall conform to the specified limits of chemical composition for carbon steel. Requirements of metallurgical structure shall include course austenitic grain size, fine autenitic grain size, and speheroidized annealed material. The material shall be tested for decarburization, maximum tensile strength, reduction area, hardenability, grain size, calibration, dimensions, and tolerances. Surface condition, coating, workmanship, finish, appearance, and packaging shall also conform to the requirements of this specification.
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1.1 This specification establishes quality assurance requirements for the physical, mechanical, and metallurgical requirements for carbon and alloy steel wire, rods, and bars in coils intended for the manufacture of mechanical fasteners which includes: bolts, nuts, rivets, screws, washers, and special parts manufactured cold.
Note 1: The Steel Industry uses the term “quality” to designate characteristics of a material which make it particularly well suited to a specific fabrication and/or application and does not imply “quality” in the usual sense.  
1.2 Wire size range includes 0.062 to 1.375 in.  
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1.4 Bar size range includes 3/8 in. (0.375) to 11/2 in. (1.500).  
1.5 Sizes for wire, rod and bar outside the ranges of paragraphs 1.2 – 1.4 may be ordered by agreement between purchaser and supplier.  
1.6 Material is furnished in many application variations. The purchaser should advise the supplier regarding the manufacturing process and finished product application as appropriate. Five application variations are:    
Cold Heading  
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1.6.1 Wire is furnished for all five application variations.  
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This specification covers the requirements for two types (Types 8.8 and 10.9) of compressible-washer-type direct tension indicators, in nominal diameter sizes M16 through M36, capable of indicating the achievement of a specified minimum bolt tension in a structural bolt and are intended for installation under either a bolt head or a hardened washer. Steel materials used in the manufacture of direct tension indicators shall be designed, processed, heat treated, and protectively coated as specified. The direct tension indicators shall conform to required chemical composition, compression load, outside diameter, number of protrusions, thickness values, inside diameter, and protrusion tangential diameter values.
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1.1 This specification covers the requirements for compressible-washer-type direct tension indicators, (DTIs) capable of indicating the achievement of a specified minimum tension in a structural bolting assembly.  
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1.2.2 Type 325–3—DTIs for use with Specification F3125 Grade A325 Type 3 bolts or Grade F1852 Type 3 assemblies.  
1.2.3 Type 490–1—DTIs for use with Specification F3125 Grade A490 Type 1 bolts or Grade F2280 assemblies.  
1.2.4 Type 490–3—DTIs for use with Specification F3125 Grade A490 Type 3 bolts Grade F2280 Type 3 assemblies.  
1.2.5 Type 8.8-1—DTIs for use with Specification F3125 Grade A325M Type 1 bolts.  
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1.3 DTIs are intended for installation with the protrusions against a hardened surface such as a bolt head, a hardened nut, or a hardened washer. (See Research Council on Structural Connections: Specification for Structural Joints Using High–Strength Bolts.)  
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This specification covers the requirements for carbon and alloy steel compressible-washer-type direct tension indicators (DTIs) capable of indicating a specified bolt tension in cap screws, bolts, anchors, and studs. These DTIs are intended for installation under a bolt or cap screw head, a hex nut, or against a hardened washer or other flat hardened surface. The following are two types of DTIs: Type 1 DTIs are suitable for comparatively large bearing surfaces and Type 2 DTIs are suitable for comparatively smaller bearing surfaces. DTIs shall have a configuration produced by extrusion, punching, pressing, or similar forming to permit a measurable decrease in thickness when placed in compression. The design shall be such that the degree of plastic deformation of the protrusions shall indicate the tension in a tightened cap screw, bolt, anchor, or stud. The process used for heat treatment of DTIs, if required, shall be through-hardening by heating to a temperature above the upper transformation temperature, quenching in oil, and then tempering by reheating to a suitable temperature to attain desired mechanical/performance properties. Protective coatings, platings, or finishes may be applied on the DTIs if specified. Compression load and hardness of the DTIs shall be determined by performing mechanical tests.
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1.2 Direct tension indicators in inch sizes 1/4 through 21/2 in. and metric sizes M6 and M72 are covered.  
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1.3.1 Style 1 DTIs are suitable for comparatively smaller bearing surfaces. Style 1 DTIs are available in Grades 5 and 8, which differ in the amount of tension they indicate at a prescribed gap (see Table 1 and Table 3).  
1.3.2 Style 2 DTIs are suitable for comparatively large bearing surfaces. Style 2 DTIs are available in Grades 55 and 105, which differ in the amount of tension they indicate at a prescribed gap (see Table 1 and Table 3).    
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SIGNIFICANCE AND USE
4.1 Decarburization and carburization are two surface conditions created, either intentionally or unintentionally, as with a pre-existing condition created during the rod rolling process, the rod/wire annealing process, or while heat treating threaded steel products. Too much of either will adversely affect the safety and performance of the threaded product. Therefore, limits have been established for three different product groups: the harder and greater the tensile strength of the product, the more susceptible to failure the product becomes if these limits are exceeded.  
4.2 When testing to a particular product specification that lists the dimensions and microindentation data to be used, that data shall take precedence over the tables in this test method.  
4.3 There are only two viable methods available to detect these deficiencies, either by the visual method or the microindentation method. Both methods are used for routine inspections when evaluations are conducted at a single location on the product sample.  
4.3.1 Because an evaluation at a specific location may not be representative of the whole part, the referee method employs the microindentation method taken as an average of evaluations conducted on four adjacent threads. This procedure significantly reduces the random test variables when compared to testing on a single thread.  
4.4 Specifying this test method does not specify or imply that testing shall be for either decarburization or carburization alone or for both conditions. When either test method is performed, both conditions will be apparent and shall be reported. For example, if an order is placed to test for decarburization and none is found, but the presence of carburization is detected, it shall be reported on the test report that carburization was found.
SCOPE
1.1 This test method covers procedures for measuring, classifying, and determining the presence of decarburization and carburization in the threaded section of hardened and tempered inch series steel bolts, screws, studs, nuts, and similar parts which have been heated to facilitate fabrication or to modify their mechanical properties. This test method is not intended to address products which are intentionally carburized to achieve specific results.  
1.2 Two routine methods are described for measuring the limits of and determining the presence of decarburization or carburization—the optical method and the microindentation method 1. Either method is appropriate for routine examinations. The microindentation method 2 shall be considered the referee method.  
1.3 For the purpose of these tests, there are four classes of hardened and tempered steel products for which specific measurements must be made with respect to their physical properties.  
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 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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ASTM F2328M-17(2022)(Test Method)
Standard Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws, Studs, and Nuts (Metric)

SIGNIFICANCE AND USE
4.1 Decarburization and carburization are two surface conditions created, either intentionally or unintentionally, as with a pre-existing condition created during the rod rolling process, the rod/wire annealing process, or while heat treating threaded steel products. Too much of either will adversely affect the safety and performance of the threaded product. Therefore, limits have been established for four different product groups: the harder and greater the tensile strength of the product, the more susceptible to failure the product becomes if these limits are exceeded.  
4.2 When testing to a particular product specification that lists the dimensions and microindentation data to be used, that data shall take precedence over the tables in this test method.  
4.3 There are only two viable methods available to detect these deficiencies: either by the visual method or the microindentation method. Both methods are used for routine inspections when evaluations are conducted at a single location on the product sample. Because an evaluation at a specific location may not be representative of the whole part, the referee method employs the microindentation method taken as an average of evaluations conducted on four adjacent threads. This procedure significantly reduces random test variables when compared to testing on a single thread.˙  
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SCOPE
1.1 This test method covers procedures for measuring, classifying, and determining the presence of decarburization and carburization in the threaded section of hardened and tempered metric steel bolts, screws, studs, nuts and similar parts which have been heated to facilitate fabrication or to modify their mechanical properties. This test method is not intended to address products which are intentionally carburized to achieve specific results.  
1.2 Two routine methods are described for measuring the limits of and determining the presence of decarburization or carburization; the Optical Method and the Microindentation Method 1. Either method is appropriate for routine examinations. The Microindentation Method 2 shall be considered the referee method.  
1.3 For the purpose of these tests, there are five classes of hardened and tempered steel products for which specific measurements must be made with respect to their physical properties.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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ASTM F2832-11(2021)(Guide)
Standard Guide for Accelerated Corrosion Testing for Mechanical Fasteners

ABSTRACT
This guide covers test procedures for performing accelerated tests to evaluate relative corrosion resistance of various coatings applied to mechanical fasteners. Corrosion mechanisms such as general and crevice corrosion may be evaluated with this method. Test duration may be selected to achieve any desired level of corrosion exposure and provides a frame of reference to determine relative coating resistance to corrosion. Fasteners tightened to a desired tension and subjected to this test procedure may be evaluated to simulate a variety of service conditions. Without large amounts of accumulated field results, it is difficult to relate test duration or the number of test cycles to actual service life for a given application.
SCOPE
1.1 This guide covers test procedures for performing accelerated tests to evaluate relative corrosion resistance of various coatings applied to mechanical fasteners. Corrosion mechanisms such as general and crevice corrosion may be evaluated with this method. Test duration may be selected to achieve any desired level of corrosion exposure and provides a frame of reference to determine relative coating resistance to corrosion. Fasteners tightened to a desired tension and subjected to this test procedure may be evaluated to simulate a variety of service conditions. Without large amounts of accumulated field results, it is difficult to relate test duration or the number of test cycles to actual service life for a given application.  
1.2 This standard is not intended to cover tests of driven fasteners such as nails, staples, screws and lag bolts.  
1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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ASTM F3359/F3359M-21(Test Method)
Standard Test Method for Determining Bending Yield Moment of Staples

SIGNIFICANCE AND USE
5.1 Staples are mechanical fasteners used in wood structures. Engineering design procedures used to determine the capacities of laterally-loaded staple connections use a yield theory to establish nominal resistance (Note 2). In order to develop nominal resistance for laterally-loaded stapled connections, the bending yield moment must be known.
Note 2: When used as a structural fastener in shear walls and diaphragms, staples are installed with the crown parallel to the long dimension of the framing member. The orientation of the staples for this bending yield moment test represents the bending yield moment applicable for this intended use).
SCOPE
1.1 This test method covers procedures for determining the bending yield moment of staples when subjected to static loading. Although intended for flat crown staples identified in Specification F1667/F1667M, this procedure is also applicable for staples with round wire. These staples are used in engineered wood building connection applications for which required connection capacities are specified by the designer.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
Note 1: This test method is applicable in either inch-pounds F3359 or SI Units [F3359M]. Values stated in SI are a mathematical conversion and are shown in brackets [ ].  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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 F1667/F1667M-21a(Specification)
Standard Specification for Driven Fasteners: Nails, Spikes, and Staples

ABSTRACT
This specification covers nails, spikes, staples, and other fasteners driven by hand tool, power tool, or mechanical device in single or multiple strikes and are positioned by hand, tool, or machine. The driven fasteners are classified as type I: nails (NL); type II: cut nails (CN); type III: spikes (SP); and type IV: staples (ST). Materials shall be tested and the individual types shall conform to the material requirements and physical properties, such as ductility, tensile strength. Protective coating and finishes are also detailed.
SCOPE
1.1 This specification covers nails, spikes, staples, and other driven fasteners, as listed in Table 1.  
Note 1: Fastener ductility information is presented in Table 2 and dimensional information in Tables 3–63.  
1.2 Fasteners described in this specification are driven by hand tool, power tool, or mechanical device in single or multiple strikes and are positioned by hand, tool, or machine.  
1.3 This specification is applicable in either inch-pounds (F1667) or SI units [F1667M]. Values stated in SI are a mathematical conversion to two significant digits and are shown in brackets [ ].  
1.4 Fasteners in this specification are sold in bulk (loose) form and are collated for loading into the magazine of an application tool. Other than as covered in Section 9, Workmanship, cohering materials (including, but not limited to, plastic, adhesive bond, paper tape, plastic strip, plastic carrier, wire, etc.) and relative orientation of collated fasteners are not within the scope of this standard.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 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
ASTM F606/F606M-21(Test Method)
Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets

ABSTRACT
These test methods establishes the standard procedures for conducting tests to determine the mechanical properties of externally and internally threaded fasteners, washers and direct tension indicators, and rivets. For externally threaded fasteners, the mechanical tests describe the procedures for determining the following properties: product hardness; proof load by length measurement (Method 1), yield strength (Method 2), yield strength of austenitic stainless steel and nonferrous materials (Method 2A), and uniform hardness (Method 3); axial tension of full size products such as fasteners and studs; wedge tension of full size products such as fasteners and studs; tension of machined test specimens including yield point (by drop of the beam or halt of the pointer, autographic diagram, and total extension under load methods), yield strength (by offset, and extension under load methods), tensile strength, elongation, and reduction of area; and total extension at fracture. As for internally threaded fasteners including nonheat- and heat-treated nuts, tests are provided for the determination of product hardness, proof load, and cone proof load. Test for determining the surface and core hardnesses are, conversely, described for direct tension indicators, and through-hardened, carburized, stainless steel, and nonferrous washers. And finally, product hardness testing is described for rivets. The test method for determining embrittlement of metallic coated externally threaded fasteners is detailed as well.
SCOPE
1.1 These test methods cover establishment of procedures for conducting tests to determine the mechanical properties of externally and internally threaded fasteners, washers, direct tension indicators, and rivets.  
1.2 Property requirements and the applicable tests for their determination are specified in individual product standards. In those instances where the testing requirements are unique or at variance with these standard procedures, the product standard shall specify the controlling testing requirements. In the absence of any specified test requirement(s), these test methods shall apply.  
1.3 These test methods describe mechanical tests for determining the following properties:    
Section    
For Externally Threaded Fasteners:  
3  
Product Hardness  
3.1  
Proof Load  
3.2.1  
Method 1, Length Measurement  
3.2.3  
Method 2, Yield Strength  
3.2.4  
Method 3, Uniform Hardness  
3.2.5  
Axial Tension Testing of Full-Size Product  
3.4  
Wedge Tension Testing of Full-Size Product  
3.5  
Tension Testing of Machined Test Specimens  
3.6  
Total Extension at Fracture Test
Single Sheer Test  
3.7
3.8  
For Internally Threaded Fasteners:  
4  
Product Hardness  
4.1  
Proof Load Test  
4.2  
Cone Proof Load Test  
4.3  
For Washers and Direct Tension Indicators:  
5  
Product Hardness-General Requirements  
5.1  
Through Hardened Washers  
5.2  
Carburized Washers  
5.3  
Stainless Steel and Nonferrous Washers  
5.4  
Direct Tension Indicators  
5.5  
Compression Load  
5.6  
For Rivets:  
6  
Product Hardness  
6.1  
Test for Embrittlement of Metallic-Coated Externally Threaded Fasteners  
7  
Test Method for Determining Decarburization and Carburization  
8  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
Note 1: The values are stated in inch-pound for inch fasteners and SI metric units for metric fasteners.  
1.5 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 approp...

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