S-90181A628 3/8"-16 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Easy hand-tightening with a wide spade head design for maximum torque without tools
• High-strength steel construction with Rockwell B55 hardness for reliable durability in demanding environments
• 40,000 psi tensile strength ensures secure fastening under heavy loads and vibration
• Coarse UNC threads with Class 2A fit provide quick assembly and consistent engagement
• Fully threaded 1 1/2" length offers versatile grip depth for various material thicknesses
• RoHS 3 compliance guarantees safe, environmentally responsible use in industrial settings
• Right-hand thread direction enables intuitive installation and removal for operators

Professional Applications & Engineering Value

This heavy-duty thumb screw addresses common industrial challenges where tool-free access and frequent adjustments are required. The spade head design provides an ergonomic grip for hand-tightening, reducing assembly time in equipment panels, access doors, and machinery guards. Made from high-strength steel with Rockwell B55 hardness, it withstands repeated use without stripping or deformation. The 3/8"-16 UNC coarse thread ensures rapid installation in wood, metal, and plastic components, while the fully threaded shank accommodates varying material depths. Ideal for maintenance-heavy environments, this screw combines user convenience with industrial-grade reliability.

Specification Summary & Compliance

This thumb screw features a 1 1/2" length with fully threaded 3/8"-16 UNC coarse threads, manufactured to Class 2A thread fit for consistent dimensional accuracy. It complies with RoHS 3 (2015/863/EU) regulations, ensuring restriction of hazardous substances. The right-hand thread direction and spade head shape adhere to industrial fastening standards for reliable performance.