S-91210A794 M4 x 4 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Enhanced holding power with a 120° cone point that bites into surfaces for secure, vibration-resistant fastening in dynamic applications.
• Superior corrosion resistance from the zinc-plated finish, extending service life in various industrial environments.
• High-strength durability provided by alloy steel with Rockwell C45 hardness, ensuring reliable performance under mechanical stress.
• Precise thread engagement with Class 5g6g thread fit and coarse M4x0.7mm threads for quick assembly and reduced cross-threading risk.
• Space-saving headless design and 2mm hex drive for flush installation in tight spaces with standard tools.
• Global compliance assurance meeting DIN 914/ISO 4027 standards, RoHS 3, and REACH for safe, regulated use worldwide.
• Optimized for right-hand threading in standard metric systems, ensuring compatibility with common industrial equipment.

Professional Applications & Engineering Value

This M4 set screw is engineered to solve critical fastening challenges in industrial settings where space constraints and vibration are common. The zinc-plated alloy steel construction provides excellent corrosion resistance, while the Rockwell C45 hardness ensures the screw maintains its integrity under repetitive loads. The 120° cone point design offers superior grip by concentrating pressure on a small area, preventing loosening in assemblies subject to movement or shock. Ideal for securing gears, pulleys, and collars on shafts, this headless screw with a 2mm hex drive allows for flush mounting without protruding parts, making it perfect for compact machinery and precision equipment. Its coarse thread and Class 5g6g thread fit enable quick, reliable installation, reducing assembly time and improving productivity in manufacturing and maintenance operations.

Specification Summary & Compliance

This set screw features precise metric thread specifications with M4 size, 0.7mm pitch, and 4mm length, adhering to Class 5g6g thread fit tolerances for consistent performance. It conforms to DIN 914 and ISO 4027 manufacturing standards, ensuring dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory adherence for industrial use.