S-92957A240 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior grip and tool-free operation with a knurled thumb head and raised round profile for easy manual tightening in tight spaces
• Exceptional corrosion resistance and durability thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise alignment and component positioning ensured by a 16mm shoulder with tight tolerances for reduced assembly errors
• High mechanical strength and load-bearing capacity with a tensile strength of 70,000 psi and Rockwell B83 hardness for reliable performance
• Wide compatibility and secure fastening with a standard M4 x 0.7mm coarse metric thread and Class 6g fit for consistent engagement
• Flexible installation options featuring both a knurled thumb head for hand-tightening and a 2.5mm hex drive for tool-assisted applications
• Compliance with global environmental standards including RoHS 3 and REACH, making it suitable for regulated industries

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to solve critical alignment and accessibility challenges in precision assemblies. The 16mm shoulder length with precise tolerances acts as a pivot or axle, ensuring components like gears, linkages, and panels are perfectly positioned without thread-induced misalignment. Made from 18-8 stainless steel, it resists rust and corrosion in demanding environments such as machinery, electronics, and automotive systems. The knurled thumb head design combined with a hex drive allows for quick adjustments without tools, reducing assembly time and maintenance costs. Its Class 6g thread fit and coarse pitch provide reliable engagement, preventing loosening under vibration. Ideal for applications requiring repeated disassembly, this metric thumb screw delivers long-term reliability and ease of use.

Specification Summary & Compliance

This shoulder screw features an M4 x 0.7mm coarse metric thread with a Class 6g tolerance for consistent fit. The shoulder diameter is 5 mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 16 mm with a tolerance of 0 to 0.05 mm, ensuring precise alignment. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety standards for industrial use.