ASTM A325-10 - 1.5.2010
 
1. Scope

1.1 This specification covers two types of quenched and tempered steel heavy hex structural bolts having a minimum tensile strength of 120 ksi for sizes 1.0 in. and less and 105 ksi for sizes over 1.0 to 1½ in., inclusive.

1.2 The bolts are intended for use in structural connections. These connections are covered under the requirements of the Specification for Structural Joints Using ASTM A325 or A490 Bolts, approved by the Research Council on Structural Connections, endorsed by the American Institute of Steel Construction and by the Industrial Fastener Institute.

 
2. Referenced Documents

B695-21

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

G101-04(2025)

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

F1136-10

Standard Specification for Zinc/Aluminum Corrosion Protective Coatings for Fasteners

F606-14

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

A449-14(2020)

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

A325M-14

Standard Specification for Structural Bolts, Steel, Heat Treated 830 MPa Minimum Tensile Strength (Metric) (Withdrawn 2016)

A194/A194M-26

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

A751-25

Standard Test Methods and Practices for Chemical Analysis of Steel Products

D3951-18(2023)

Standard Practice for Commercial Packaging

F436-11

Standard Specification for Hardened Steel Washers

F788/F788M-20(2025)

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

F959-15

Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners

B?1.1

Unified Screw Threads

B?18.2.6

Fasteners for Use in Structural Applications

B?18.24

Part Identification Number (PIN) Code System Standard for B18 Fastener Products

Specification for Structural Joints Using High-Strength Bolts

F1470-24

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

F1789-26

Standard Terminology for F16 Mechanical Fasteners

A563-15

Standard Specification for Carbon and Alloy Steel Nuts

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