S-92832A338 M4 x 20 mm ISO 7380 Steel Button Head Torx Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
• High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibration
• Enhanced torque transmission with T20 Torx drive, reducing cam-out and tool wear during installation
• Class 8.8 strength grade provides excellent mechanical properties for structural and machinery applications
• Full threading and coarse pitch enable faster assembly and superior holding power in various materials
• Low-profile button head design offers a flush finish while maintaining high clamp force
• Rockwell C22 hardness ensures durability and resistance to deformation under stress

Professional Applications & Engineering Value

These M4 metric screws with Class 8.8 zinc-plated steel construction are engineered to address critical industrial fastening challenges. The Torx button head and T20 drive provide superior torque transfer, minimizing strip-out in high-vibration applications like machinery, automotive assemblies, and electronic enclosures. The fully threaded coarse pitch design ensures rapid installation and strong grip in metals and composites, while the rounded head profile reduces stress concentration. With 110,000 psi tensile strength and corrosion-resistant plating, these screws deliver long-term reliability in harsh environments, making them ideal for OEM and MRO applications requiring precision and durability.

Specification Summary & Compliance

This fastener adheres to ISO 7380 standards with M4 x 0.7mm coarse thread and Class 6h thread fit for precise dimensional accuracy. Manufactured from zinc-plated steel with a 20mm length and right-hand thread direction, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety. The Class 8.8 strength grade and Rockwell C22 hardness ensure consistent performance in accordance with industrial specifications.