ASTM F3043-23 pdf free download – Standard Specification For “Twist Off” Type Tension Control Structural Bolt/Nut/Washer Assemblies, Alloy Steel, Heat Treated, 200 Ksi Minimum Tensile Strength.
1.1 This specification covers one type of heat-treated, alloy steel tension control bolt-nut-washer assemblies, commonly referred to as “sets,” which have a tensile strength of 200 to 215 ksi. These assemblies are designed to develop a minimum predetermined tension when torqued onto the nut, while simultaneously applying counter torque to separate the spline end from the body of the bolt using an appropriate spline drive installation tool.
1.2 An assembly consists of a tension control bolt with a spline end, a nut, and a washer, all covered by this specification.
1.3 The assemblies are available in round heads described in Section 10, in sizes ranging from 1 inch to 1 1/4 inch inclusive.
1.4 The fastener assemblies are intended for use in structural connections in the following environmental conditions:
1.4.1 Interiors, normally dry, including interiors where structural steel is embedded in concrete, enclosed in masonry or protected by membrane or noncorrosive contact type fireproofing.
1.4.2 Interiors and exteriors, normally dry, under roof, where the installed assemblies are adequately protected by a shop-applied or field-applied coating to the structural steel system.
1.5 The fastener assemblies are not suitable for use in structural connections in the following environments, whether protected or not by a shop-applied or field-applied coating to the structural steel system:
1.5.1 Exteriors not under roof.
1.5.2 Chemical environments containing strong concentrations of highly corrosive gases, fumes, or chemicals, either in solution or as concentrated liquids or solids, that come into direct contact with the fasteners or their protective coating.
1.5.3 Heavy industrial environments severe enough to be classified as a chemical environment as described in 1.5.2.
1.5.4 Condensation and high humidity environments with continuous condensation, including those submerged in water and soil.
1.5.5 Cathodically protected environments, such as those where current is applied to the structural steel system using the sacrificial anode method or the DC power method.
1.6 Units—The values stated in inch-pound units are considered standard; no other units of measurement are included in this specification.
