ASTM F3125/F3125M-15a - 15.12.2015
 
1. Scope

1.1 This specification covers 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.

1.1.1 This specification is a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852 and F2280.

1.1.2 This consolidated standard is to ensure alignment between standards with the same intended end use and to simplify the use and maintenance of structural bolt specifications.

1.2 Intended Use: 

1.2.1 Bolts manufactured under this specification are intended for use in structural connections covered in the Specification for Structural Joints Using High-Strength Bolts, as approved by the Research Council on Structural Connections.

1.2.2 Bolts in this specification are furnished in sizes from 1/2 to 1-1/2 in. inclusive and from M12 to M36 inclusive.

1.3 Classification: 

1.3.1 Bolts are designated by grade or property class, which indicates inch or metric respectively.

1.3.2 Bolts are designated by type denoting raw material chemical composition.

1.3.3 Bolts are designated by style denoting Heavy Hex bolts or “Twist-Off” Style assemblies.

Grade

Min. Strength

Type

Style

A325

120 ksi

1

3

Heavy Hex Head

A325M

830 MPa

1

3

Heavy Hex Head

F1852

120 ksi

1

3

Twist-Off

A490

150 ksi

1

3

Heavy Hex Head

A490M

1040 MPa

1

3

Heavy Hex Head

F2280

150 ksi

1

3

Twist-Off

 

 

 

 

 

Type 1 - 120 ksi (830 MPa) - carbon steel, carbon boron steel, alloy steel or alloy steel with boron addition

Type 3 - 120 ksi (830 MPa) or 150 ksi (1040 MPa) - weathering steel

Type 1 - 150 ksi (1040 MPa) - alloy steel or alloy steel with boron addition

1.4 Terms used in this specification are defined in F1789.

1.5 Units—The values stated in either SI units or inch pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.6 Table footnotes are requirements. Notes are advisory.

1.7 The following safety hazard caveat pertains to the test methods portion 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.

 
2. Referenced Documents

A449-14(2020)

Standard Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use

A194/A194M-23

Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

A563-15

Standard Specification for Carbon and Alloy Steel Nuts

A751-21

Standard Test Methods and Practices for Chemical Analysis of Steel Products

B695-21

Standard Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel

F606/F606M-21

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

F1940-07a(2019)

Standard Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners (Includes all amendments and changes 9/17/2019).

F2833-11(2017)

Standard Specification for Corrosion Protective Fastener Coatings with Zinc Rich Base Coat and Aluminum Organic/Inorganic Type

G101-04(2020)

Standard Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels

A354-17e2

Standard Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners (Includes all amendments and changes 11/27/2018).

F2328M-17(2022)

Standard Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws, Studs, and Nuts (Metric)

F2329-13

Standard Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners

A563M-07

Standard Specification for Carbon and Alloy Steel Nuts [Metric]

A354-17e2

Standard Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners (Includes all amendments and changes 11/27/2018).

A563-15

Standard Specification for Carbon and Alloy Steel Nuts

A563M-07

Standard Specification for Carbon and Alloy Steel Nuts [Metric]

E709-21

Standard Guide for Magnetic Particle Testing

E1444/E1444M-22a

Standard Practice for Magnetic Particle Testing for Aerospace (Includes all amendments and changes 7/11/2022).

F436-11

Standard Specification for Hardened Steel Washers

F436M-11

Standard Specification for Hardened Steel Washers [Metric] (Withdrawn 2016)

F788-20

Standard Specification for Surface Discontinuities of Bolts, Screws, Studs, and Rivets, Inch and Metric Series

F1136/F1136M-11(2019)

Standard Specification for Zinc/Aluminum Corrosion Protective Coatings for Fasteners

F1470-24

Standard Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection

F1789-23

Standard Terminology for F16 Mechanical Fasteners

F2328-17(2022)

Standard Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws, Studs, and Nuts

F2660-20

Standard Test Method for Qualifying Coatings for Use on F3125 Grade A490 Structural Bolts Relative to Environmental Hydrogen Embrittlement

IFI 144

Test Evaluation Procedures for Coating Qualification

Specification for

Structural Joints Using High-Strength Bolts

F1470-24

Standard Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection

F1789-23

Standard Terminology for F16 Mechanical Fasteners

Unified Screw Threads

B1.13M

B18.18

Quality Assurance for Fasteners

B18.2.6

Fasteners for Use in Structural Applications

A449-14(2020)

Standard Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use