S-92545A139 M3.5 x 13 mm Thumb Screws

Key Features & Benefits at a Glance

• Superior grip and tool-free operation with a fully knurled round head design for easy hand tightening and adjustment in tight spaces
• Excellent corrosion resistance provided by 18-8 Stainless Steel, ensuring long-term reliability in harsh or humid industrial environments
• High mechanical strength and durability with a tensile strength of 90,000 psi and Rockwell B96 hardness to withstand repeated use and high-stress applications
• Fast and precise assembly enabled by the coarse M3.5 x 0.6 mm thread and Class 6g fit, reducing cross-threading risks and installation time
• Secure partial threading (11.8 mm thread length on a 13 mm screw) provides optimal engagement while leaving an unthreaded shank for alignment and shear strength
• Low-profile round head design minimizes protrusion, making it ideal for applications where clearance is a concern
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets and sensitive industries

Professional Applications & Engineering Value

This M3.5 thumb screw is engineered to solve common assembly challenges in industrial and electronic settings. The 18-8 Stainless Steel construction offers exceptional resistance to rust and corrosion, which is critical for equipment used in medical, marine, or outdoor applications. The knurled head provides a non-slip surface, allowing for quick manual adjustments without tools—perfect for panels, access covers, and components requiring frequent maintenance. The coarse metric thread and Class 6g thread fit ensure reliable engagement in softer materials or pre-tapped holes, reducing the risk of stripping. Its partially threaded design adds to the screw’s versatility, providing a sturdy, unthreaded section that enhances alignment and resists vibrational loosening in dynamic environments.

Specification Summary & Compliance

This thumb screw features a Metric M3.5 x 0.6 mm coarse thread with a Class 6g tolerance for precise fit. It is manufactured from 18-8 Stainless Steel, with a low-profile round head (8 mm diameter, 5 mm height) and a right-hand thread. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.