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Stainless 304 B8 Heavy HHCS (Inch), ASTM A193 Class 1

Our Stainless Steel 304 B8 Heavy Hex Head Cap Screws (Inch series) manufactured to ASTM A193 Class 1 are designed for high‑strength, corrosion‑resistant fastening in demanding industrial and structural applications. Produced from Type 304 stainless steel and heat‑treated to ASTM A193 Grade B8, Class 1, these fasteners offer reliable tensile strength, consistent thread quality, and excellent resistance to rust, oxidation, and many chemical environments.

The heavy hex head provides a larger bearing surface and increased wrenching area compared to standard hex bolts, allowing for improved torque control and load distribution. With inch‑series UNC threading, these fasteners are commonly used in pressure vessels, flanges, piping systems, equipment assemblies, and structural connections where stainless performance and ASTM compliance are required.
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Engineered for durability and precision, 304 Stainless B8 Heavy Hex Cap Screws are widely used in chemical processing, food and beverage facilities, water treatment plants, energy applications, and outdoor structural installations. The heavy hex head design supports high clamp loads and improves installation stability in critical joints, while the ASTM A193 Class 1 specification ensures consistent mechanical properties for demanding service conditions. Available in a broad range of inch diameters and lengths, these cap screws deliver dependable performance where strength, corrosion resistance, and dimensional accuracy are essential.
 
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