S-93516A542 1/4"-20 x 1" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance for long-lasting performance in marine and harsh industrial environments, thanks to 651 Silicon Bronze material.
• High tensile strength of 70,000 PSI ensures reliable load-bearing capacity and structural integrity in demanding applications.
• Excellent durability with a Rockwell B70 hardness rating, providing resistance to wear and deformation under stress.
• Secure and easy installation with an external hex drive and fully threaded UNC coarse pattern for quick, robust fastening.
• Precise thread fit (Class 2A) guarantees consistent engagement and reduces the risk of cross-threading or loosening.
• Compliance with ASME B18.2.1 standards ensures dimensional accuracy and interchangeability for professional use.
• Environmentally responsible design with RoHS 3 and REACH compliance, meeting strict regulatory requirements.

Professional Applications & Engineering Value

This 651 Silicon Bronze hex head screw is engineered to address common challenges in corrosive and high-stress environments, such as marine hardware, chemical processing plants, and outdoor structures. The silicon bronze material offers inherent resistance to saltwater corrosion and oxidation, significantly extending service life and reducing maintenance costs. With a fully threaded UNC coarse pattern and Class 2A thread fit, it provides reliable, vibration-resistant fastening that minimizes the risk of failure in dynamic loads. The external hex drive allows for efficient installation using standard tools, enhancing productivity in assembly lines or field repairs. Ideal for applications requiring high tensile strength (70,000 PSI) and durability, this screw delivers consistent performance where other fasteners might degrade, ensuring long-term operational safety and efficiency.

Specification Summary & Compliance

This screw features precise UNC coarse threads with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. It is manufactured in compliance with ASME B18.2.1 standards, ensuring reliability and interchangeability. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, confirming its suitability for environmentally conscious and global industrial applications.