S-90402A142 6-32 x 3/16" ASME B18.13 Steel Pan Head Phillips Screws with External-Tooth Lock Washer

Key Features & Benefits at a Glance

• Vibration-resistant locking: Integrated external-tooth lock washer prevents loosening under dynamic loads, ensuring reliable performance in high-vibration environments.
• Superior corrosion protection: Zinc-plated steel construction provides excellent resistance to rust and environmental degradation, extending service life.
• High-strength durability: 60,000 psi tensile strength and Rockwell B69 hardness offer exceptional load-bearing capacity and resistance to deformation.
• Easy installation and removal: Phillips No. 2 drive and pan head design allow for efficient torque application with standard tools, reducing assembly time.
• Reliable thread engagement: UNC coarse threads and Class 2A fit ensure quick, secure fastening with consistent clamping force.
• Full-thread versatility: Completely threaded shank provides maximum grip along the entire length, suitable for various material thicknesses.
• Industry compliance assurance: Meets ASME B18.13 specifications and environmental standards (RoHS 3, REACH) for guaranteed quality and regulatory acceptance.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these zinc-plated steel screws with integrated external-tooth lock washers solve critical fastening challenges in machinery, electronics, and automotive assemblies. The UNC coarse pitch threads combined with Class 2A fit enable rapid installation while maintaining precise alignment, reducing production downtime. The Phillips pan head design offers a low-profile, secure drive that withstands repeated torque applications without stripping. Particularly valuable in vibration-prone applications, the locking washer design eliminates the need for separate thread-locking compounds, providing permanent resistance to rotational loosening while the zinc plating ensures long-term corrosion protection in harsh operating conditions.

Specification Summary & Compliance

This 6-32 x 3/16" screw features UNC coarse threads with Class 2A thread fit for standard industrial applications. Manufacturing complies with ASME B18.13 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming the absence of restricted substances for global market acceptance.