ASTM F3125 / F3125M - 18

    Standard Specification for High Strength Structural Bolts and Assemblies, Steel and Alloy Steel, Heat Treated, Inch Dimensions 120 ksi and 150 ksi Minimum Tensile Strength, and Metric Dimensions 830 MPa and 1040 MPa Minimum Tensile Strength

    Active Standard ASTM F3125 / F3125M | Developed by Subcommittee: F16.02

    Book of Standards Volume: 01.09


      Format Pages Price  
    PDF 13 $56.00   ADD TO CART
    Hardcopy (shipping and handling) 13 $56.00   ADD TO CART
    Standard + Redline PDF Bundle 26 $67.00   ADD TO CART



    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, Table 1

    1.3.1 Bolts are designated by grade, which indicates inch or metric strength and style.

    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.

    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 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.

    1.8 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    IFI Standard

    IFI 144 Test Evaluation Procedures for Coating Qualification

    RCSC Standard

    Specification for Structural Joints Using High-Strength Bolts

    ASME Standards

    B1.13M

    B18.18 Quality Assurance for Fasteners

    B18.2.6 Fasteners for Use in Structural Applications

    ASTM Standards

    A194/A194M Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

    A354 Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners

    A449 Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use

    A563 Specification for Carbon and Alloy Steel Nuts

    A563M Specification for Carbon and Alloy Steel Nuts (Metric)

    A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

    B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel

    E709 Guide for Magnetic Particle Testing

    E1444/E1444M Practice for Magnetic Particle Testing

    F436/F436M Specification for Hardened Steel Washers Inch and Metric Dimensions

    F606/F606M Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets

    F788 Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series

    F1136/F1136M Specification for Zinc/Aluminum Corrosion Protective Coatings for Fasteners

    F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection

    F1789 Terminology for F16 Mechanical Fasteners

    F1940 Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners

    F2328 Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws, Studs, and Nuts

    F2328M Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws, Studs, and Nuts (Metric)

    F2329 Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners

    F2660 Test Method for Qualifying Coatings for Use on A490 Structural Bolts Relative to Environmental Hydrogen Embrittlement

    F2833 Specification for Corrosion Protective Fastener Coatings with Zinc Rich Base Coat and Aluminum Organic/Inorganic Type

    F3019/F3019M Specification for Chromium Free Zinc-Flake Composite, with or without Integral Lubricant, Corrosion Protective Coatings for Fasteners

    G101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels


    ICS Code

    ICS Number Code 21.060.10 (Bolts, screws, studs)

    UNSPSC Code

    UNSPSC Code 31161600(Bolts); 11101704(Steel)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/F3125_F3125M-18

    Citation Format

    ASTM F3125 / F3125M-18, Standard Specification for High Strength Structural Bolts and Assemblies, Steel and Alloy Steel, Heat Treated, Inch Dimensions 120 ksi and 150 ksi Minimum Tensile Strength, and Metric Dimensions 830 MPa and 1040 MPa Minimum Tensile Strength, ASTM International, West Conshohocken, PA, 2018, www.astm.org

    Back to Top