S-91241A805 M3 x 12 mm ASME B18.13 Stainless Steel Pan Head Phillips Screws with Spring Lock Washer

Key Features & Benefits at a Glance

• Superior Vibration Resistance: Integrated 410 stainless steel spring lock washer provides reliable locking action, preventing loosening in high-vibration environments.
• Excellent Corrosion Protection: The passivated finish on both the 18-8 stainless steel screw and washer ensures long-term durability and resistance to rust and corrosion.
• High Tensile Strength & Durability: With a tensile strength of 70,000 psi and Rockwell B80 hardness, this screw offers robust performance for demanding applications.
• Effortless Installation: The Phillips No. 1 drive and rounded pan head design allow for quick and easy installation with standard tools.
• Precision Metric Threading: Fully threaded M3 x 0.5mm coarse thread with Class 6g fit ensures secure fastening and excellent compatibility with standard metric nuts and tapped holes.
• Regulatory Compliance & Reliability: Manufactured to meet ASME B18.13 specifications and compliant with RoHS 3 and REACH, ensuring safety and environmental standards are met.
• Secure & Stable Fastening: The combination of a fully threaded shank and spring lock washer provides a tight, reliable clamp load that maintains integrity under stress.

Professional Applications & Engineering Value

This M3 stainless steel rounded head screw is engineered to address critical challenges in industrial assembly, such as vibration-induced loosening and environmental corrosion. The 18-8 stainless steel construction, enhanced by a passivated finish, provides exceptional resistance to moisture and chemicals, making it ideal for machinery, electronics, and outdoor equipment. The integrated spring lock washer of 410 stainless steel actively counters vibrational forces, ensuring that connections remain secure in dynamic applications like automotive components, conveyor systems, and electrical enclosures. Its fully threaded design and Class 6g thread fit offer precise engagement, reducing the risk of cross-threading and improving load distribution. By combining high tensile strength with regulatory compliance, this screw delivers reliable performance in sectors where fastener failure is not an option.

Specification Summary & Compliance

This screw features an M3 x 0.5 mm coarse metric thread with a Class 6g tolerance for precise fit, and is fully threaded for consistent holding power. It complies with ASME B18.13 manufacturing standards, ensuring dimensional accuracy and performance reliability. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for hazardous substances.