S-94387A518 M2.5 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, extending service life in demanding environments
• Precise JIS No. 1 drive compatibility ensures secure tool engagement and reduces stripping during installation
• Class 6g coarse thread design provides excellent assembly tolerance and faster installation in various materials
• Fully threaded shank maximizes grip strength and load distribution across the entire fastener length
• Standard rounded pan head profile offers low-profile seating and improved aesthetic integration
• Right-hand thread direction enables standard clockwise tightening for intuitive assembly operations
• Regulatory compliance assurance with RoHS 3 and JIS B 1111 standards for global market acceptance

Professional Applications & Engineering Value

This M2.5 metric screw delivers exceptional performance in precision assembly applications where space constraints and material compatibility are critical. The zinc-plated steel construction provides reliable corrosion protection for electronics enclosures, automotive components, and industrial control panels exposed to moderate environmental conditions. Its JIS drive style prevents cam-out issues common in high-volume production environments, while the Class 6g coarse pitch threading ensures consistent engagement in both metallic and plastic substrates. The combination of fully threaded design and controlled length tolerance (-0.6 to 0 mm) guarantees uniform clamping force distribution, making it ideal for securing sensitive components in consumer electronics, instrumentation, and small machinery assemblies where vibration resistance and dimensional accuracy are paramount.

Specification Summary & Compliance

This fastener maintains Class 6g thread fit per metric standards with coarse 0.45 mm pitch and M2.5 thread size. Manufacturing conforms to JIS B 1111 specifications with dimensional parameters including 4.5 mm head diameter, 1.7 mm head height, and 4 mm fully threaded length. The product is RoHS 3 (2015/863/EU) compliant and features right-hand thread direction with standard pan head profile, ensuring compatibility with international regulatory requirements and industry-standard assembly processes.