S-91352A125 M4 x 20 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 10.9 strength rating and 140,000 PSI tensile strength for reliable performance in demanding applications
• Superior corrosion resistance through blue zinc plating on alloy steel, extending service life in harsh industrial environments
• Optimized installation efficiency with 2.5mm hex socket drive providing secure tool engagement and reduced cam-out risk
• Enhanced load distribution from the rounded button head design that minimizes surface damage during tightening
• Reliable thread engagement with coarse 0.7mm pitch and Class 6g thread fit ensuring consistent fastening in various materials
• Full-length threading for maximum grip range and versatile application across different material thicknesses
• Industry compliance assurance meeting ISO 7380 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These M4 button head screws deliver critical engineering solutions where high tensile strength and corrosion resistance are paramount. The blue zinc-plated alloy steel construction provides superior protection against environmental factors while maintaining Rockwell C32 hardness for exceptional wear resistance. The hex socket drive design ensures secure installation in confined spaces common in machinery, automotive assemblies, and electronic enclosures. With coarse thread pitch and Class 6g thread fit, these fasteners offer reliable performance in vibration-prone applications, preventing loosening while accommodating material variations. The fully threaded design maximizes clamping force distribution, making them ideal for critical joints in structural frameworks and precision equipment where failure is not an option.

Specification Summary & Compliance

Manufactured to precise metric dimensions with M4 x 0.7mm thread specification and 20mm length. Threads conform to Class 6g tolerance standards for consistent fit. The fastener meets ISO 7380 manufacturing specifications for hex socket button head screws and demonstrates compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The Class 10.9 strength rating ensures mechanical properties exceed minimum requirements for high-stress applications across industrial sectors.