S-90696A159 2-64 x 5/8" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional thread engagement and reliability due to the Class 3A thread fit, minimizing the risk of cross-threading and ensuring a secure, precise assembly.
• High mechanical strength for demanding applications, offering a tensile strength of 70,000 psi and Rockwell B70 hardness to withstand significant loads and stress.
• Optimized for precision tooling and access featuring a standard hex socket head with a 5/64" drive, allowing for high torque application in confined spaces.
• Secure fastening in fine-thread applications with the 2-64 UNF fine thread, providing increased adjustability and vibration resistance compared to coarse threads.
• Full-length threading for maximum grip ensures the screw can be used with a nut or engaged along its entire length in a tapped hole for versatile application.
• Guaranteed quality and material safety, manufactured to meet ASME B18.3 specifications and compliant with RoHS 3 and REACH environmental regulations.

Professional Applications & Engineering Value

This 2-64 UNF thread socket head cap screw is engineered to solve critical challenges in precision assembly and high-stress environments. The combination of 18-8 Stainless Steel and a Class 3A thread fit provides excellent corrosion resistance and precise, reliable threading, reducing the risk of assembly errors and thread failure. The fine UNF thread is particularly valuable in applications requiring fine adjustment and enhanced vibration resistance, such as in precision instruments, aerospace components, and complex machinery. The hex socket drive allows for high torque application with standard hex keys, making it ideal for assemblies where space is limited and a flush or low-profile head is necessary. Its 70,000 psi tensile strength ensures it can handle demanding mechanical loads, making it a robust choice for industrial and engineering applications where failure is not an option.

Specification Summary & Compliance

This fastener adheres to strict dimensional and performance standards. The thread is manufactured to Class 3A fit for high precision and is a 2-64 UNF fine thread with a right-hand direction. It is fully threaded and measures 5/8" in length. The screw is manufactured in compliance with the ASME B18.3 specification for socket head cap screws. Furthermore, it is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and material safety regulations for global industrial use.