S-92620A155 1"-8 x 13" 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 150,000 psi tensile strength, ideal for high-stress structural and machinery applications.
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
• High-strength Grade 8 steel construction with Rockwell C33 hardness for reliable performance under extreme conditions.
• Precise Class 3A thread fit ensures secure, vibration-resistant connections in critical assemblies.
• External hex drive design allows for high-torque installation and easy removal with standard tools.
• Partially threaded shank provides unthreaded grip length for better clamping force distribution.
• Compliance with major industry standards including ASME B18.2.1 and SAE J429, guaranteeing quality and interchangeability.

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical reliability in demanding applications such as heavy machinery, construction equipment, and structural steel frameworks. The 1"-8 UNC coarse thread design resists loosening under vibration, while the partial threading ensures optimal clamp load on joined materials. Manufactured from high-strength steel and finished with zinc yellow-chromate plating, it combats corrosion in outdoor or chemically aggressive settings. Its 13" length and external hex drive make it suitable for large-scale bolting operations where durability and ease of maintenance are paramount.

Specification Summary & Compliance

This fastener meets Class 3A thread fit tolerances per UNC standards, ensuring precise engagement. It conforms to ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use.