ASTM A194 Grade 7 & 7L Heavy Hex Nuts | JTE Fasteners

Description

High-strength chromium-molybdenum heavy hex nuts designed for L7, B16, and B7 studs, featuring 24–38 HRC hardness and 175 ksi tensile strength for critical industrial applications.

Product Description

Engineered for high-pressure and high-temperature environments, these ASTM A194 Grade 7 and 7L heavy hex nuts are the standard mating components for L7, B16, and B7 stud bolts. Manufactured from premium chromium-molybdenum steel, they deliver exceptional durability and resistance to galling, ensuring long-lasting performance in demanding industrial settings.

Key Features

Material: Alloy chromium-molybdenum steel for superior strength and toughness.
Hardness: Heat-treated to achieve a hardness range of 24–38 HRC.
Strength: Minimum tensile strength of 175 ksi (1,205 MPa).
Low-Temp Service: Grade 7L nuts are impact-tested (Charpy V-Notch) to ensure reliability in sub-zero conditions.
Fit: Heavy hex design provides a larger bearing surface for high-load applications.

Applications

These fasteners are critical for flange connections in the oil and gas, petrochemical, power generation, and heavy machinery industries. They are specifically recommended for use with ASTM A193 L7, B16, and B7 studs to maintain integrity under extreme thermal and mechanical stress.