ASTM A325 Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

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ASTM A325 Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength
This specification covers the chemical, mechanical, and dimensional requirements for two types of heavy hex structural bolts made of quenched and tempered steel that are intended for use in structural connections. These bolts are designated by type, denoting chemical composition, as follows: Type 1—medium carbon, carbon boron, or medium carbon alloy steel; and Type 3—weathering steel. The steel bolts shall undergo heat and product analysis for chemical composition measurements. The bolts shall also undergo test that shall examine their conformance to specified properties such as dimensions and thread fit, surface discontinuities, coating weight and thickness, hardness, tensile strength, yield strength, elongation, reduction of area, proof load, and rotational capacity.
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
ASTM Standards A194/A194M Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both A325M Specification for Structural Bolts, Steel, Heat Treated 830 MPa Minimum Tensile Strength (Metric) A449 Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use A490 Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength A563 Specification for Carbon and Alloy Steel Nuts A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel D3951 Practice for Commercial Packaging F436 Specification for Hardened Steel Washers F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets F788/F788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series F959 Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners F1136 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 F2329 Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners G101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels ASME Standards B18.24 Part Identification Number (PIN) Code System Standard for B18 Fastener Products
Index Terms
bolts; carbon steel; steel; structural; weathering steel; Bolted construction materials/applications--specifications; High-strength structural steel--specifications; Steel bolting materials--specifications; Structural steel (SS) bolting materials--specifications;
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