S-90113A110 4-40 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for demanding industrial environments.
• Quick and secure manual tightening thanks to the external hex thumb head design, eliminating the need for tools.
• Reliable and durable performance backed by a high tensile strength of 80,000 psi and Rockwell B83 hardness.
• Easy and fast installation with 4-40 UNC coarse threading, providing excellent engagement in various materials.
• Precise and consistent fit ensured by the Class 2A thread fit, reducing the risk of cross-threading.
• Full-length threading for maximum grip and holding power across the entire 1/2" length.
• Compliance with strict environmental regulations including RoHS 3 and REACH, ensuring safe and responsible use.

Professional Applications & Engineering Value

This 4-40 UNC Thumb Screw in 18-8 Stainless Steel is engineered to solve common assembly challenges where tool-less operation and corrosion resistance are critical. Its external hex head and coarse thread design allow for rapid manual adjustment and disassembly in tight spaces, making it perfect for industrial applications such as access panels, electronic enclosures, and machinery guards. The fully threaded body ensures maximum holding strength, while the Class 2A thread fit guarantees consistent, reliable engagement without stripping. Built to withstand harsh conditions, this screw offers long-term durability and performance, reducing maintenance needs and downtime.

Specification Summary & Compliance

This thumb screw adheres to UNC coarse thread standards with a Class 2A thread fit for precise dimensional accuracy. It is manufactured from 18-8 Stainless Steel and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets the latest environmental and safety requirements for industrial components.