S-90165A540 5/8"-11 x 5 5/16" Thumb Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with 180,000 psi tensile strength and Rockwell C40 hardness, ensuring reliable performance in demanding applications.
• Superior grip and easy manual operation thanks to the large four-arm thumb head design, eliminating the need for tools in quick-adjustment scenarios.
• Versatile swivel tip with 10° maximum angle adjustment and removable design for precise contact and adaptability on uneven surfaces.
• Robust corrosion-resistant Black-Oxide Steel finish enhances longevity and provides protection in various industrial environments.
• Reliable coarse UNC threading with Class 2A fit ensures quick assembly, secure fastening, and reduced cross-threading risk.
• Fully threaded shank offers consistent engagement along the entire length for maximum holding power.
• Compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible use in global markets.

Professional Applications & Engineering Value

This heavy-duty thumb screw is engineered to solve common industrial challenges where rapid, tool-free adjustments and high clamping force are required. The Black-Oxide Steel construction provides excellent resistance to wear and corrosion, making it ideal for machinery, fixtures, and equipment subjected to frequent handling or harsh conditions. The four-arm head delivers superior torque application, while the removable swivel tip with a 10° maximum swivel angle prevents damage to contact surfaces and ensures even pressure distribution. With its UNC coarse thread and fully threaded design, it offers quick installation and reliable performance in applications such as clamping devices, access panels, and adjustable assemblies, reducing downtime and maintenance costs.

Specification Summary & Compliance

This thumb screw features a 5/8"-11 UNC coarse thread with Class 2A fit for standard dimensional accuracy and ease of assembly. It is manufactured from high-strength steel with a black-oxide finish and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.