S-91306A729 M4 x 30 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 tensile strength (140,000 PSI) for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc-plated alloy steel construction, extending service life in demanding environments
• Optimized installation efficiency through 2.5mm hex drive design that prevents cam-out and ensures secure fastening
• Enhanced thread engagement with coarse 0.7mm pitch and Class 6g thread fit for quick assembly and vibration resistance
• Reduced surface damage thanks to rounded button head profile that minimizes snagging and provides a finished appearance
• Full-threaded design ensures maximum grip length and uniform stress distribution along the entire 30mm shaft
• Consistent quality assurance through Rockwell C32 hardness testing for reliable mechanical properties batch after batch

Professional Applications & Engineering Value

This M4 metric screw delivers critical engineering solutions for industrial equipment, machinery assembly, and structural frameworks where vibration resistance and high tensile strength are paramount. The zinc-plated alloy steel construction provides essential corrosion protection in manufacturing environments, while the coarse thread pitch (0.7mm) enables rapid installation without compromising holding power. The rounded head design with hex drive configuration addresses common installation challenges by eliminating sharp edges that could damage surrounding components and providing positive torque transmission. Engineered to ISO 7380 standards, these fully threaded fasteners maintain dimensional consistency across production runs, ensuring reliable performance in automated assembly systems and critical mechanical joints where failure is not an option.

Specification Summary & Compliance

This fastener features precision Metric M4 x 0.7mm threading with Class 6g tolerance for consistent fit, manufactured to ISO 7380 specifications for dimensional accuracy. The product maintains full compliance with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations regarding substance restrictions. With a total length of 30mm and fully threaded configuration, it delivers reliable mechanical performance backed by Class 10.9 strength certification and Rockwell C32 hardness verification for quality assurance in industrial applications.