S-90403A142 6-32 x 3/16" ASME B18.13 Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior vibration resistance with the integrated internal-tooth lock washer that prevents loosening under dynamic loads
• Enhanced corrosion protection from zinc-plated steel construction, ensuring longevity in demanding environments
• High tensile strength of 60,000 psi for reliable load-bearing capacity in critical assemblies
• Easy installation and removal with the Phillips No. 2 drive design, reducing assembly time and tool wear
• Consistent thread engagement due to Class 2A thread fit and fully threaded design, minimizing cross-threading risks
• Broad industrial compatibility with UNC coarse threads, simplifying sourcing for standard applications
• Regulatory peace of mind with compliance to RoHS 3, REACH, and ASME B18.13 standards

Professional Applications & Engineering Value

These zinc-plated steel screws with internal-tooth lock washers address common industrial challenges like vibration-induced fastener failure and corrosion. The pan head design provides a low-profile, secure fit, while the Phillips drive ensures efficient torque application without slippage. Ideal for machinery, automotive, and electronics assemblies, the 6-32 UNC coarse thread offers quick installation and robust holding power in materials where fine threads might strip. The fully threaded configuration maximizes grip length, distributing stress evenly to prevent joint failure in high-vibration environments like motors or conveyor systems.

Specification Summary & Compliance

This screw maintains Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy for consistent performance. Manufactured to ASME B18.13 specifications, it guarantees interchangeability and reliability. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, adhering to environmental and safety regulations for global industrial use.