S-90165A422 5/16"-18 x 2 1/16" Thumb Screws

Key Features & Benefits at a Glance

• Effortless manual operation with a large 1 1/2" wide, four-arm head and 7/8" height for superior grip and torque application without tools.
• Enhanced durability and corrosion resistance provided by the black-oxide steel finish, extending service life in demanding environments.
• Secure and reliable fastening ensured by the Class 2A thread fit and 180,000 psi tensile strength, preventing stripping and failure under high stress.
• Versatile swivel tip design with a 10° maximum angle and removable feature protects sensitive surfaces and allows for easy tip replacement.
• Wide industrial compatibility with 5/16"-18 UNC coarse threads, facilitating quick installation and robust holding power.
• Consistent performance backed by Rockwell C40 hardness, maintaining thread integrity and resistance to wear over repeated use.
• Compliance with global standards including RoHS 3 and REACH, ensuring safe and environmentally responsible use in various applications.

Professional Applications & Engineering Value

This black-oxide steel thumb screw is engineered to address common industrial challenges such as frequent adjustments and high-torque requirements without specialized tools. The four-arm head design and coarse UNC threads enable rapid installation and removal, reducing downtime in assembly lines or maintenance tasks. The removable swivel tip minimizes damage to contact surfaces, making it ideal for securing delicate components in electronics, machinery, and fixtures. With a tensile strength of 180,000 psi and corrosion-resistant finish, it delivers long-term reliability in harsh conditions, from manufacturing equipment to outdoor enclosures. This combination of user-friendly features and robust material properties ensures efficient, tool-free fastening solutions across diverse sectors.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threading (5/16"-18) for reliable performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use. The specifications cover a length of 2 1/16", full threading, and mechanical properties like Rockwell C40 hardness, aligning with common engineering requirements for durability and safety.