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Stainless 316 B8M Heavy HHCS (Inch), ASTM A193 Class 1
Our Stainless Steel 316 B8M Heavy Hex Head Cap Screws (Inch series) manufactured to ASTM A193 Class 1 are high‑strength, corrosion‑resistant fasteners designed for critical industrial and structural applications. Produced from Type 316 stainless steel (B8M) and heat treated per ASTM requirements, these fasteners provide excellent tensile strength along with superior resistance to chlorides, chemicals, saltwater, and harsh environmental exposure.
The heavy hex head offers a larger bearing surface and increased wrenching area compared to standard hex heads, allowing higher torque application and improved load distribution in demanding joints. With inch‑series UNC threading, ASTM A193 B8M heavy hex cap screws are commonly specified for pressure vessels, piping systems, flanged connections, structural assemblies, and equipment installations where both strength and corrosion resistance are essential.
Engineered for reliability in severe environments, ASTM A193 Class 1 Stainless 316 B8M Heavy Hex Cap Screws are widely used in marine construction, chemical processing facilities, power generation, offshore platforms, water treatment plants, and outdoor structural installations. The heavy hex head design supports high clamp loads and stable installation in critical joints, while the 316 stainless material provides long‑term protection against corrosion and aggressive media. Available in a wide range of inch diameters and lengths, these fasteners deliver consistent performance where safety, durability, and ASTM compliance are required.
