S-94095A021 M3 x 4 mm ASME B18.3.6M, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Secure Vibration-Resistant Locking: The green nylon 6/6 plastic tip provides excellent resistance to loosening under vibration and thermal cycling, maintaining clamp load in dynamic applications.
• Superior Corrosion Resistance: The black-oxide finish on the alloy steel body offers enhanced protection against rust and oxidation, extending the screw's service life.
• Precise and Reliable Thread Engagement: The Class 5g6g thread fit ensures consistent, high-quality mating with internal threads, reducing the risk of cross-threading and assembly failures.
• High-Strength Durability: With a Rockwell C28 hardness, this set screw provides robust strength and wear resistance, suitable for demanding mechanical assemblies.
• Wide Operational Temperature Range: The nylon tip performs reliably from -50° to 250° F, making it ideal for applications exposed to varying thermal conditions.
• Space-Saving Headless Design: The headless and hex drive configuration allows for flush mounting in tight spaces and enables easy installation with a standard 1.5 mm hex key.
• Compliance with Industry Standards: Manufactured to meet ASME B18.3.6M specifications and compliant with RoHS 3 and REACH environmental regulations, ensuring quality and safety.

Professional Applications & Engineering Value

This M3 set screw is engineered to solve critical challenges in precision assembly and maintenance. The black-oxide alloy steel construction provides a durable base that resists corrosion, while the green nylon tip acts as a self-locking element, preventing back-out in high-vibration environments like automotive subsystems, robotics, and electronic enclosures. Its coarse thread and Class 5g6g thread fit ensure quick, secure installation with minimal risk of stripping, enhancing assembly efficiency. The headless design and compact 4 mm length make it perfect for applications where space is constrained and a smooth surface profile is required. By integrating a temperature-resistant nylon tip, this hex drive set screw delivers reliable performance in thermal cycling conditions, reducing the need for frequent retightening and maintenance.

Specification Summary & Compliance

This metric set screw features an M3 x 0.5 mm thread with a Class 5g6g thread fit, ensuring precise dimensional accuracy per ISO standards. It is manufactured in compliance with the ASME B18.3.6M standard and is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for industrial use.