S-91306A662 M4 x 16 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional durability and strength with Class 10.9 rating and 140,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by zinc-plated alloy steel construction, extending service life in harsh environments
• Optimal thread engagement with fully threaded M4 coarse pitch (0.7mm) design ensuring maximum holding power and vibration resistance
• Precise installation control through 2.5mm hex drive system that prevents stripping and allows for consistent torque application
• Enhanced clearance and aesthetic appeal from the rounded button head profile that reduces snagging while providing a finished look
• Reliable thread compatibility with Class 6g thread fit ensuring proper mating with standard metric nuts and threaded components
• Industry compliance assurance meeting ISO 7380 specifications for dimensional accuracy and international quality standards

Professional Applications & Engineering Value

These high-strength metric screws deliver critical engineering solutions across industrial applications where vibration resistance and structural integrity are paramount. The zinc-plated alloy steel construction provides essential corrosion protection for machinery, automotive assemblies, and outdoor equipment exposed to environmental elements. The fully threaded M4 coarse pitch design ensures maximum thread engagement in both metallic and composite materials, preventing loosening under dynamic loads. With Rockwell C32 hardness and 140,000 psi tensile strength, these rounded head hex screws maintain clamping force in high-stress applications while the 2.5mm hex drive enables precise installation in confined spaces. The button head profile offers reduced protrusion for applications requiring smooth surfaces and improved safety.

Specification Summary & Compliance

This fastener features precision M4 x 0.7mm coarse pitch threading with Class 6g thread fit tolerance for consistent mating performance. The 16mm length and 7.6mm head diameter provide standardized dimensional characteristics per ISO 7380 specifications. Manufacturing compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The Class 10.9 strength rating confirms adherence to international mechanical property standards for heavy-duty fastening applications.