S-91236A924 1"-8 x 5" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 60,000 PSI ensures reliable performance under heavy loads, reducing the risk of fastener failure in demanding applications.
• Zinc plating provides superior corrosion resistance, extending the screw's service life and maintaining integrity in harsh industrial environments.
• Coarse UNC threads and Class 2A thread fit offer easier assembly and better vibration resistance, minimizing loosening over time.
• Partially threaded design allows for precise clamping force control, ideal for applications where specific grip length is critical.
• External hex drive and large 1 1/2" head width enable high-torque installation with standard tools, speeding up assembly processes.
• Manufactured to ASME B18.2.1 standards with Grade A307 steel guarantees consistent quality and interchangeability for industrial fastening systems.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global supply chain requirements.

Professional Applications & Engineering Value

This 1"-8 UNC hex head screw is engineered to address critical fastening challenges in industrial applications such as structural steel connections, heavy machinery assembly, and construction projects. The Grade A307 steel construction combined with Rockwell B69 hardness provides optimal durability against shear and tensile stresses, while the zinc plated finish effectively resists corrosion in outdoor or humid conditions. The coarse thread design ensures quick installation and reliable holding power in materials where fine threads might strip, and the partial threading allows engineers to specify exact engagement lengths for precise joint integrity. Meeting ASME B18.2.1 specifications, this screw delivers consistent performance in heavy-duty fastening solutions, reducing maintenance needs and downtime.

Specification Summary & Compliance

This hex head screw features a 1"-8 UNC coarse thread with Class 2A thread fit for standard tolerance and easy assembly. It is manufactured in accordance with ASME B18.2.1 and ASTM A307 specifications, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances and safe for industrial use.