S-91746A220 8-32 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual grip and control with knurled round head texture for secure handling without tools
• Superior corrosion resistance thanks to 18-8 stainless steel construction for long-lasting performance in harsh environments
• High mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for reliable load-bearing applications
• Easy installation and adjustment with coarse UNC threading and Class 2A fit ensuring smooth engagement and secure fastening
• Optimized space efficiency through low-profile round head design and partial threading for compact assembly requirements
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Versatile right-hand thread configuration compatible with standard 8-32 UNC components for broad application compatibility

Professional Applications & Engineering Value

Engineered for precision manual fastening in industrial and commercial settings, this 8-32 UNC thumb screw delivers exceptional value through its 18-8 stainless steel composition, providing inherent corrosion resistance that extends service life in demanding environments. The knurled round head with 3/8" diameter offers superior tactile grip, eliminating the need for tools during frequent adjustments in equipment panels, electronic enclosures, and machinery access points. The coarse thread spacing combined with Class 2A thread fit ensures rapid installation and reliable retention, while the partially threaded design provides optimal engagement depth control. These features collectively address common assembly challenges including vibration resistance, quick maintenance access, and corrosion protection in manufacturing, electronics, and automation applications.

Specification Summary & Compliance

This thumb screw maintains precision Class 2A thread fit with 8-32 UNC coarse threading and right-hand thread direction. Manufacturing specifications include 1/2" overall length with 3/8" thread length, 3/8" head diameter, and low-profile round head configuration. The component fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international standards for hazardous substance restrictions in industrial components.