S-90181A600 5/16"-24 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Easy manual operation with comfortable spade head design requiring no tools for installation and removal
• Superior durability from Rockwell B55 hardened steel construction that resists wear in demanding applications
• High load-bearing capacity with 40,000 psi tensile strength for secure fastening in industrial environments
• Precision thread engagement through Class 2A fine thread fit that prevents cross-threading and ensures consistent performance
• Full-length threading provides maximum grip along the entire 3/4" length for enhanced holding power
• Environmental compliance with RoHS 3 standards for safe use in regulated industries
• Optimal ergonomics with 7/8" head width and 11/16" height for comfortable hand-tightening control

Professional Applications & Engineering Value

This 5/16"-24 UNF thumb screw delivers exceptional value in applications requiring frequent access or adjustment, such as electrical enclosures, machinery guards, and access panels. The steel construction with Rockwell B55 hardness provides the necessary durability to withstand repeated use without stripping or deformation. The spade head design offers superior grip for manual operation, eliminating the need for tools in time-sensitive maintenance situations. With its Class 2A fine thread fit and fully threaded right-hand configuration, this fastener ensures precise alignment and secure fastening in industrial applications where vibration resistance and reliability are critical. The combination of 40,000 psi tensile strength and standardized UNF threading makes it ideal for equipment requiring both strength and precision thread engagement.

Specification Summary & Compliance

This thumb screw features precision 5/16"-24 UNF fine threading with Class 2A thread fit for consistent performance and interchangeability. Manufacturing adheres to standardized inch measurements with 0.313" thread diameter and 3/4" length. The product is fully RoHS 3 (2015/863/EU) compliant, meeting environmental regulations for hazardous substance restrictions. The right-hand thread direction and fully threaded configuration ensure proper installation according to industry standards.