S-90402A830 10-32 x 5/8" 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 long-term joint integrity.
• Superior corrosion protection: Zinc-plated steel construction provides excellent rust resistance for demanding industrial environments.
• High-strength performance: 60,000 psi tensile strength and Rockwell B69 hardness deliver reliable fastening in high-stress applications.
• Optimized drive engagement: Phillips No. 2 drive offers efficient installation with reduced cam-out risk during torque application.
• Full-thread versatility: Completely threaded shank maximizes grip length and adjustment flexibility across various material thicknesses.
• Precision thread fit: Class 2A UNF fine threads ensure consistent engagement and superior resistance to vibrational loosening.
• Standard-compliant reliability: Manufactured to ASME B18.13 specifications for guaranteed dimensional accuracy and performance.

Professional Applications & Engineering Value

These 10-32 UNF zinc-plated steel screws with integrated external-tooth lock washers solve critical vibration-induced failure points in industrial assemblies. The fine thread configuration provides superior resistance to loosening in high-frequency environments, while the fully threaded design ensures maximum contact surface for enhanced load distribution. The zinc-plated steel construction delivers reliable corrosion protection for machinery, electrical enclosures, and automotive components exposed to harsh conditions. The pan head profile with Phillips No. 2 drive facilitates quick installation in confined spaces, making these rounded head screws ideal for production lines requiring both speed and reliability. With their 60,000 psi tensile strength, they maintain structural integrity in applications where vibration and thermal cycling would compromise ordinary fasteners.

Specification Summary & Compliance

Precision-engineered with Class 2A thread fit and UNF fine threads (10-32) for consistent engagement. Manufactured to ASME B18.13 specifications ensuring dimensional accuracy. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. Features right-hand threading and fully threaded 5/8" length for versatile application across industrial fastening requirements.