S-91268A261 3/8"-16 x 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength for demanding applications with Grade 8 classification and a tensile strength of 150,000 PSI, ensuring reliable performance under high stress.
• Superior durability and wear resistance provided by Rockwell C33 hardness, extending the service life of the fastener in harsh industrial environments.
• Optimal grip and easy installation with a standard external hex drive and 9/16" head width, allowing for efficient torque application with common tools.
• Reliable and secure fastening due to the fully threaded 3/8"-16 UNC coarse thread design, which offers excellent holding power and resistance to vibration loosening.
• Precise and consistent thread engagement ensured by the Class 2A thread fit, reducing the risk of cross-threading and ensuring a proper fit with matching nuts.
• Compliance with major industry standards including ASME B18.2.1 and SAE J429, guaranteeing quality, interchangeability, and performance reliability.
• Safe for use in regulated environments as it is RoHS 3 and REACH compliant, making it suitable for global industrial supply chains without hazardous substance concerns.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and automotive assembly, where failure is not an option. Its high-strength steel construction and 150,000 PSI tensile strength provide a robust solution for applications subjected to extreme loads and vibrations. The fully threaded 3/8"-16 UNC coarse thread design ensures maximum thread engagement and superior clamping force, reducing the risk of joint failure. With an external hex drive and precise Class 2A thread fit, it allows for quick, secure installation and maintenance, minimizing downtime in industrial settings. This screw is ideal for structural connections, equipment frames, and other demanding scenarios where durability and compliance with standards like ASME B18.2.1 are paramount.

Specification Summary & Compliance

This fastener features a 3/8"-16 UNC coarse thread with Class 2A thread fit for consistent dimensional accuracy and ease of assembly. It adheres to ASME B18.2.1 and SAE J429 specifications, ensuring reliable performance in mechanical and structural applications. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in environments with strict environmental and health standards.