Uses of A325 Bolts

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The ASTM A325 bolt standard covers high-strength structural bolts with a heavy hex head and a full body diameter. These bolts are usually short in overall length, ranging from half an inch to one and a half inches. Because they are connecting steel to steel, their chemical and mechanical specifications are extremely specific. They are produced from medium-carbon steel, which is precisely what develops the desired mechanical properties.

A325 Bolts

Grade A325 bolts are used in highway construction and bridge construction. They are made of medium-carbon steel, Type 1, and weathering steel. Type 1 bolts can be galvanized and have a minimum tensile strength of 120ksi. The average strength of an A325 bolt is 120,000 psi, but they're still weaker than Grade A490 bolts. Nevertheless, they're a popular choice for structural applications.

ASTM A325 bolts are the most common structural bolts in heavy construction. They are generally short in length and feature a heavy hex head. They are designed to be tightened to close to their proof strength, and seventy percent of their tensile strength. These bolts have thick heads, known as heavy hex geometry. The length of an A325 bolt is measured from its under the head to the base of its threads.

Grade 5 bolts and grade 8 bolts are nearly identical. Both fall under the classification system of the Society of Automotive Engineers. While SAE grade 5 bolts and ASTM A325 bolts are equivalent, they are designed differently. The ASTM A325 bolt is used in OEM applications where structural steel connection is a high priority. SAE grade 5 bolts, on the other hand, are commonly used in the auto industry.

Uses of A325 Bolts

A325 bolts are heat-treated, heavy-hex structural steel bolts with a minimum tensile strength of 120ksi. There are several grades of bolt performance. The lowest grade (grade 8.8) is made from low-carbon alloy steel. Higher grades are made from medium-carbon steel and are heat-treated. In general, engineers recommend A325 bolts for structural steel connections.

As a result of their high strength, A325 bolts are most often used in heavy construction. The Research Council on Structural Connections (RCSC) has established standards for A325 bolts. Heavy construction, including bridges, highways, and bridges, generally requires A325 bolts. They are a good choice because they are less prone to stress corrosion and hydrogen stress cracking. Despite this, make sure to check the tensile strength of each fastener to avoid potential issues.

A325 bolts are specialized structural fasteners. A325 bolts have a head that is the same size as the A490 nut head. These bolts are typically used in steel-to-steel construction and are designed to be tightly torqued. The shank of an A325 bolt is not designed to be driven. In addition, it features a spline at the end of its shank, which prevents it from turning while the nut is on. Its black oxide finish prevents corrosion in a dry environment.

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