S-92620A320 1 1/8"-7 x 8 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength: With a 150,000 psi tensile strength, this screw withstands extreme loads, reducing the risk of failure in demanding applications.
• Superior Corrosion Resistance: Zinc Yellow-Chromate plating provides a durable barrier against rust and environmental elements, extending service life in harsh conditions.
• High Hardness for Durability: Rockwell C33 hardness ensures the screw maintains its shape and thread integrity under high stress and repeated use.
• Reliable Thread Engagement: Coarse UNC threads and Class 2A fit offer easy installation and secure fastening, minimizing loosening in vibrating environments.
• Optimized for Heavy-Duty Use: Partially threaded design and Grade 8 classification make it ideal for applications requiring strong, reliable connections without full threading.
• Industry-Standard Compliance: Meets ASME B18.2.1 and SAE J429 specifications, ensuring consistent quality and performance in professional settings.
• Environmental Safety: RoHS 3 and REACH compliance guarantees the screw is free from hazardous substances, supporting safe and sustainable operations.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial environments, such as construction, machinery assembly, and automotive systems. Its steel construction with Zinc Yellow-Chromate plating combats corrosion, a common issue in outdoor or high-moisture settings, while the 1 1/8"-7 UNC coarse thread and external hex drive facilitate quick, secure installation with standard tools. The partially threaded design concentrates strength where needed, preventing thread damage and ensuring precise clamping force. By integrating high tensile strength and Rockwell C33 hardness, it resists deformation under load, making it a dependable choice for applications requiring long-term reliability and reduced maintenance.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and adheres to UNC thread standards for consistent performance. It complies with ASME B18.2.1 and SAE J429 manufacturing specifications, ensuring dimensional accuracy and reliability. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, supporting safe and sustainable usage in various industries.