S-91268A993 1"-8 x 9" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Grade 8 steel construction with Rockwell C33 hardness provides superior durability and resistance to wear, extending service life in demanding environments.
• 1"-8 UNC coarse threading with Class 2A fit offers quick assembly and secure fastening, minimizing installation time and improving efficiency.
• Partially threaded design allows for precise clamping force control, ideal for applications requiring specific grip lengths.
• External hex drive and hex head facilitate easy installation and removal with standard tools, enhancing maintenance accessibility.
• Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability, ensuring reliable performance in industrial settings.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, supporting sustainable and responsible sourcing.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as construction machinery, automotive assemblies, and structural frameworks. The steel material and Rockwell C33 hardness provide exceptional resistance to vibration and impact, reducing maintenance downtime. With a 1"-8 UNC coarse thread and Class 2A thread fit, it ensures rapid installation and reliable holding power in high-load scenarios. The partially threaded design allows for optimized stress distribution, preventing joint loosening. Ideal for use with external hex drive tools, it streamlines assembly processes while meeting ASME B18.2.1 specifications for consistent performance in demanding environments.

Specification Summary & Compliance

This fastener features a 1"-8 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy, ensuring secure connections. It complies with ASME B18.2.1 and SAE J429 standards, guaranteeing adherence to industry manufacturing norms. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming environmental and safety regulations are met for reliable industrial use.