S-94387A203 M3 x 4 mm JIS B 1111 JIS Steel Pan Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B71 hardness for reliable load-bearing performance
• Precision thread engagement with Class 6g fit and full threading for maximum grip and vibration resistance
• Optimized drive compatibility with JIS No. 2 drive for secure tool engagement and reduced cam-out risk
• Standardized dimensional accuracy with JIS B 1111 compliance ensuring interchangeability and consistent performance
• Enhanced environmental compliance meeting RoHS 3 regulations for safe use across regulated industries
• Coarse thread design providing faster installation and improved resistance to loosening in dynamic applications

Professional Applications & Engineering Value

These M3 pan head screws deliver critical engineering advantages through their zinc-plated steel composition and JIS B 1111 standard compliance. The combination of 60,000 psi tensile strength and Class 6g thread precision addresses common industrial challenges including vibration-induced loosening and assembly inconsistency. The fully threaded design with coarse pitch ensures maximum thread engagement in thin materials and plastic components, while the rounded pan head provides a low-profile finish that minimizes snagging in automated assembly systems. These metric screws are particularly valuable in electronics enclosures, machinery guards, and automotive components where reliable fastening solutions must withstand operational stresses while maintaining regulatory compliance.

Specification Summary & Compliance

This fastener maintains precise dimensional control with M3 x 0.5mm thread specifications and 4mm length tolerance of -0.15 to 0.15mm. The Class 6g thread fit ensures proper clearance according to ISO metric standards, while manufacturing follows JIS B 1111 specifications for rounded head screws. Regulatory compliance includes RoHS 3 (2015/863/EU) certification, confirming the absence of restricted hazardous substances. The right-hand coarse threading and fully threaded design provide consistent performance across industrial applications requiring metric fasteners.