S-92620A244 7/16"-20 x 3 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 8 strength rating and 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion protection through zinc yellow-chromate plating that extends service life in demanding industrial environments
• Optimized thread engagement with UNF fine threading and Class 2A fit ensuring precise, vibration-resistant connections
• Enhanced installation efficiency featuring external hex drive and standard 5/8" head width for straightforward wrench access
• Controlled clamping force distribution through partial threading design that concentrates thread engagement where needed most
• Industry-standard compatibility meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability
• Environmental compliance assurance with RoHS 3 and REACH compliance for global manufacturing applications

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The steel construction with Rockwell C33 hardness provides outstanding resistance to shear and tensile forces, making them ideal for structural connections, machinery assembly, and equipment manufacturing. The zinc yellow-chromate plated finish offers superior corrosion resistance in environments exposed to moisture, chemicals, and outdoor elements. The 7/16"-20 UNF fine threading ensures precise fitment and vibration resistance in dynamic applications, while the partial threading design allows for controlled clamping force distribution. These industrial fasteners are specifically designed to meet the rigorous demands of construction, automotive, and manufacturing sectors where reliability and compliance with ASME B18.2.1 standards are critical for operational safety and longevity.

Specification Summary & Compliance

This heavy-duty hex bolt features precise Class 2A thread fit with UNF fine thread spacing (7/16"-20) and 3 3/4" length with minimum 1 1/8" thread length. Manufactured to exacting ASME B18.2.1 specifications where identified by SAE J429 standards, ensuring dimensional accuracy and performance reliability. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict chemical substance control.