S-90181A622 3/8"-16 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Easy manual operation with spade head design requiring no tools for quick installation and adjustments
• Superior torque transmission through fully threaded construction and coarse UNC threads for secure fastening
• Exceptional durability with hardened steel construction and Rockwell B55 hardness resisting wear in demanding applications
• Reliable load-bearing capacity with 40,000 psi tensile strength ensuring structural integrity under stress
• Precision thread engagement with Class 2A fit providing consistent performance and reduced cross-threading risks
• Environmental compliance meeting RoHS 3 standards for safe use in regulated industrial environments
• Optimized grip design with 1 3/32" head width and 13/16" height for comfortable hand-tightening control

Professional Applications & Engineering Value

This heavy-duty thumb screw solves critical industrial fastening challenges where tool-free access and repeated adjustments are required. The steel construction with Rockwell B55 hardness provides exceptional resistance to deformation, while the fully threaded 3/8"-16 UNC coarse thread design ensures maximum engagement depth and vibration resistance in machinery, electrical enclosures, and assembly fixtures. The spade head shape offers superior ergonomics for hand-tightening applications where space constraints limit tool usage, making it ideal for maintenance panels, access doors, and frequently adjusted equipment components. Its RoHS 3 compliance makes it suitable for electronics, automotive, and manufacturing applications requiring environmentally conscious fastening solutions.

Specification Summary & Compliance

Manufactured to precise inch system measurements with Class 2A thread fit tolerance ensuring reliable performance in UNC threaded applications. Features 3/8"-16 coarse threads with right-hand direction and 0.375" thread diameter for standard compatibility. The 3/4" length and fully threaded design provide consistent engagement depth. Complies with RoHS 3 (2015/863/EU) environmental regulations for industrial use.