S-90181A605 5/16"-24 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Effortless manual tightening and loosening with the spade head design, eliminating the need for tools in frequent adjustments
• Superior durability and wear resistance provided by steel construction with a Rockwell B55 hardness rating
• High mechanical strength for demanding applications, supporting loads up to 40,000 psi tensile strength
• Precise and reliable thread engagement with a Class 2A fine UNF thread fit, ensuring secure fastening in inch-based assemblies
• Full-length threading for maximum grip and versatility, allowing installation along the entire 1" length
• Right-hand thread direction for standard operation, compatible with common industrial practices
• Environmentally responsible manufacturing with full compliance to RoHS 3 regulations, safe for various industries

Professional Applications & Engineering Value

This 5/16"-24 UNF thumb screw is engineered to solve critical challenges in industrial assembly and maintenance. The steel material and Rockwell B55 hardness provide exceptional resistance to deformation and corrosion, making it ideal for high-stress environments like machinery panels, electronic enclosures, and prototyping fixtures. The spade head shape allows for quick manual adjustments without tools, significantly reducing downtime in applications requiring frequent access. With its fine thread spacing and Class 2A thread fit, it delivers vibration-resistant, secure connections in precision equipment. Fully compliant with RoHS 3, this thumb screw fastener ensures safety and reliability in sectors from manufacturing to electronics, enhancing operational efficiency and product longevity.

Specification Summary & Compliance

This thumb screw adheres to UNF thread standards with a 5/16"-24 fine thread and Class 2A thread fit for precise dimensional accuracy. It is fully threaded with a right-hand direction, measuring 1" in length. Manufactured from high-grade steel with a hardness of Rockwell B55 and tensile strength of 40,000 psi, it meets rigorous industrial demands. The product is RoHS 3 (2015/863/EU) Compliant, ensuring it is free from hazardous substances and suitable for global regulatory requirements.