S-92620A156 1"-8 x 14" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 150,000 psi tensile strength and Grade 8 classification for reliable performance in high-stress applications.
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
• Precise thread engagement with Class 3A fit and 1"-8 UNC coarse threading for secure fastening and reduced cross-threading risk.
• Optimized partial threading design allowing for concentrated clamping force where needed along the 14" length.
• High durability ensured by Rockwell C33 hardness, maintaining structural integrity under repeated loads.
• Easy installation and removal with external hex drive and 1 1/2" head width for standard tool compatibility.
• Regulatory compliance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards for global industrial use.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver critical reliability in construction, machinery assembly, and structural frameworks where vibration resistance and high tensile strength are paramount. The zinc yellow-chromate plating combats oxidation in outdoor or chemically exposed settings, while the 1"-8 UNC coarse threads with Class 3A precision ensure rapid installation and consistent clamp load distribution. The partially threaded shank focuses stress away from unthreaded sections, reducing fatigue failure risks in dynamic load scenarios. These screws solve common fastening challenges—such as joint loosening under cyclic loads or corrosion-induced degradation—by integrating material robustness (steel alloy), controlled hardness (Rockwell C33), and standardized dimensions per ASME B18.2.1.

Specification Summary & Compliance

This hex head screw adheres to critical dimensional and performance standards: Class 3A thread fit for tight tolerances, UNC coarse thread series with 1"-8 size, and partial threading over a 2 1/2" minimum length. Manufacturing conforms to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring interchangeability and repeatable performance. The product is verified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substance restrictions.