S-94387A256 M4 x 20 mm JIS B 1111 JIS Steel Pan Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
• Superior load-bearing capacity from 60,000 psi tensile strength and Rockwell B71 hardness, ensuring reliable performance under stress.
• Precise and secure fastening with Class 6g thread fit and fully threaded coarse pitch design, reducing the risk of loosening.
• Broad compatibility with JIS B 1111 standard and JIS No. 2 drive, facilitating easy installation in metric-based assemblies.
• Optimized for high-volume applications thanks to consistent 20mm length with tight ±0.15mm tolerance, minimizing assembly errors.
• Environmental and regulatory compliance with RoHS 3, making them safe for use in various global markets.

Professional Applications & Engineering Value

This M4 x 20mm rounded head screw is engineered from zinc-plated steel to address common industrial challenges such as corrosion and mechanical failure. Its fully threaded coarse pitch and Class 6g thread fit provide excellent grip and vibration resistance, making it ideal for machinery, automotive components, and electrical enclosures where durability and precision are critical. The JIS B 1111 standard ensures compatibility with metric systems, while the pan head design allows for flush mounting, reducing snagging risks in tight spaces. By combining high tensile strength with consistent dimensions, these screws deliver long-term reliability in industrial fastening applications.

Specification Summary & Compliance

This product features a metric M4 x 0.7mm coarse thread with Class 6g tolerance and a length of 20mm (±0.15mm). It conforms to JIS B 1111 manufacturing specifications and is fully RoHS 3 (2015/863/EU) compliant, ensuring adherence to international environmental and safety standards.