S-93285A210 M4 x 4 mm ASME B18.3.6M Set Screws

Key Features & Benefits at a Glance

• Secure, Non-Marring Fastening: The green nylon 6/6 plastic tip prevents damage to delicate surfaces and provides excellent vibration resistance, ensuring a reliable, long-lasting hold.
• Superior Corrosion Resistance: Made from 18-8 Stainless Steel, this screw offers excellent durability and resistance to rust and corrosion in demanding environments.
• High-Strength Drive & Precise Thread Fit: The 2 mm hex socket drive allows for high torque application, while the Class 6g thread fit ensures smooth, accurate installation and a secure connection.
• Wide Temperature Tolerance: The nylon tip maintains its integrity across a broad temperature range from -50° to 250° F, making it suitable for applications with thermal cycling.
• Optimized for High-Vibration Applications: The combination of a coarse thread (M4 x 0.7mm pitch) and the headless, set screw design provides superior resistance to loosening under dynamic loads.
• Material Hardness for Durability: With a Rockwell B80 hardness, the screw body offers a robust balance of strength and toughness to withstand installation stresses.
• Streamlined Assembly: The headless design allows for a flush installation, ideal for applications where space is limited and a smooth surface profile is required.

Professional Applications & Engineering Value

This M4 hex socket set screw is engineered to solve critical challenges in precision assembly and machinery. The 18-8 Stainless Steel construction provides the necessary corrosion resistance for use in harsh or washdown environments, while the Class 6g thread fit guarantees consistent engagement and clamping force. The defining feature is the soft nylon tip, which acts as a locking element and prevents galling and damage to costly shafts and components in set screw applications. This makes it an indispensable component for securing pulleys, gears, and knobs onto shafts in industries like automation, automotive, and consumer electronics, where vibration resistance and surface protection are paramount. Its compliance with major standards ensures reliability and integration into global supply chains.

Specification Summary & Compliance

This metric set screw conforms to a Class 6g thread tolerance for precision fit. It is manufactured in compliance with the ASME B18.3.6M standard, ensuring dimensional accuracy and performance reliability. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.