S-91746A804 3/8"-16 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual grip with knurled round head design for secure tool-free tightening and loosening in industrial environments
• Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid or chemically exposed settings
• High mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for reliable load-bearing performance
• Precise coarse thread engagement using UNC 3/8"-16 threads with Class 2A fit for quick assembly and vibration resistance
• Optimized partial threading allowing controlled clamping force and reduced cross-threading risks
• Low-profile round head design for space-constrained applications while maintaining easy accessibility
• Full regulatory compliance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

Engineered for industrial equipment, machinery panels, and frequent-access enclosures, this 18-8 stainless steel thumb screw solves critical operational challenges. The knurled head texture ensures positive grip even with oily hands or gloves, eliminating slippage during high-vibration service. Its UNC coarse threading combined with Class 2A thread fit delivers rapid installation while maintaining alignment accuracy in repeated maintenance cycles. The partial threading design prevents over-tightening damage to sensitive components, while the low-profile round head minimizes snagging hazards in congested assembly areas. With 80,000 psi tensile strength, it withstands mechanical stress in heavy-duty clamping applications without deformation.

Specification Summary & Compliance

This 3/8"-16 UNC thumb screw features precision Class 2A thread fit with coarse thread spacing for reliable engagement. Manufacturing conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety. Dimensional accuracy includes 1½" length with 1-7/16" thread length and 0.875" head diameter for consistent performance across industrial applications.