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ASTM A193 B7, B7M, B8, & B8M PTFE Heavy Hex Bolts

High-quality carbon steel bolts have been a mainstay of durable goods manufacturing, agricultural machinery, and transportation operations for decades. Our ASTM-A193 B7 heavy hex bolts are an excellent fit for countless industries, ranging from HVAC and construction to marine and petrochemical. ASTM-A193 B7, B7M, B8, & B8M heavy hex bolts are available in stainless or coated in teflon (PTFE), hot dipped galvanized, and zinc or cadmium plated configurations for environments where moisture and corrosion are key considerations.

Why Choose ASTM-A193 B7 Teflon Blue Cap Screw?

Heavy hex bolts are especially popular in durable goods manufacturing, assembly, and fabrication because of their larger bearing surface area. Hex bolts with the ASTM-A193 B7 and B8 rating offer many advantages in demanding environments:

High tensile strength: A193 B7 features chrome-molybdenum steel alloy that undergoes quenching and tempering. This material offers at least 125 ksi of tensile strength, and a maximum hardness of 35 HRC. B7 headed or non-headed bolts are produced from 4140 bar stock or forging stock.

High temperature resistance: The medium-carbon, heat-treated nature of A193 B7 hex bolts makes them ideal for high-temp automotive, aerospace, semiconductor, manufacturing, and oil/gas applications, including flange bolts.

Higher torque capacity: Steel alloy heavy hex bolts support greater torque due to their larger head size and bearing surface, making this design essential for many structural bolting needs.

Vibration resistance: The high-temp, high-strength and shock-distributing properties of ASTM-A193 B7 heavy hex bolts make them ideal for applications where vibrations are common, such as heavy machinery and bridges.

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About Brazos Fasteners

Our focus is to provide high-quality fasteners in whatever time frame you need them with expert customer service. The success of various organizations with diverse backgrounds relies heavily on our products, which are held to high standards.

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