S-96016A563 M4 x 20 mm Thumb Screws

Key Features & Benefits at a Glance

• Tool-free installation and adjustment with a knurled acetal plastic head for secure grip and easy hand-tightening in tight spaces
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ensuring long-term reliability in various environments
• Precise and reliable fastening with a Class 4g6g thread fit and M4 x 0.7mm coarse thread, enabling quick assembly and reduced cross-threading risk
• Durable, low-profile design featuring a round head that minimizes protrusion, ideal for applications with limited clearance
• Wide operational temperature range from 32° to 180° F, making it suitable for both standard and temperature-sensitive industrial settings
• Full threading along the 20mm length for consistent engagement and holding power across the entire fastener
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This M4 thumb screw is engineered to address common challenges in industrial assembly and maintenance, where quick access and reliable fastening are critical. The 18-8 stainless steel body offers superior corrosion resistance, reducing maintenance needs in humid or corrosive environments, while the acetal plastic head with a knurled texture ensures a firm, non-slip grip for tool-free operation—ideal for electronic enclosures, machinery panels, and laboratory equipment. The fully threaded design and Class 4g6g metric thread provide consistent clamping force and ease of installation, minimizing assembly time and errors. Its low-profile, round head fits seamlessly in confined spaces, making it a versatile choice for OEM and MRO applications that demand both performance and convenience.

Specification Summary & Compliance

This thumb screw features a Metric M4 x 0.7mm coarse thread with a Class 4g6g thread fit for precise dimensional accuracy, ensuring compatibility with standard metric components. It is fully threaded over a 20mm length and constructed from durable 18-8 stainless steel, with a head temperature range of 32° to 180° F. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its adherence to environmental and safety standards for industrial use.