S-91305A103 M2 x 4 mm JCIS10-70 JIS Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
• Superior holding power from 60,000 psi tensile strength and Rockwell B71 hardness, ensuring reliable fastening under stress.
• Precise thread engagement with Class 4h fit and coarse 0.4mm pitch, reducing cross-threading risks and speeding assembly.
• Secure drive performance using JIS No. 0 drive style, providing consistent torque transfer and minimizing cam-out.
• Flush mounting capability with standard 90° countersink angle and flat head design, ideal for space-constrained applications.
• Full-threaded length for maximum grip across the entire 4mm span, enhancing stability in thin materials.
• Compliance assurance meeting JCIS10-70 specifications and RoHS 3, supporting quality and environmental standards.

Professional Applications & Engineering Value

These M2 metric screws with zinc-plated steel offer robust solutions for electronics, machinery, and automotive assemblies where vibration resistance and longevity are critical. The flat head profile and 90° countersink enable seamless integration into surfaces, preventing protrusions that could interfere with moving parts. With a coarse thread pitch of 0.4mm and Class 4h thread fit, they ensure quick, accurate installation in metals or plastics, reducing assembly errors. The JIS No. 0 drive complements high-volume production by resisting stripping, while the fully threaded design distributes load evenly, minimizing loosening in dynamic conditions. Ideal for industrial screws in compact devices, they deliver consistent performance under 60,000 psi stress, backed by Rockwell B71 hardness for enduring reliability.

Specification Summary & Compliance

This product adheres to precise metric dimensions: M2 x 0.4mm thread with 4mm length, featuring a Class 4h thread fit for tight tolerances. Manufacturing follows JCIS10-70 standards, ensuring uniformity in drive style and head geometry. It is fully compliant with RoHS 3 (2015/863/EU) regulations, guaranteeing the absence of hazardous substances for safe use in global markets.