S-90402A831 10-32 x 3/4" ASME B18.13 Steel Pan Head Phillips Screws with External-Tooth Lock Washer

Key Features & Benefits at a Glance

• Vibration-resistant locking with integrated external-tooth lock washer prevents loosening under dynamic loads
• Superior corrosion protection through zinc-plated steel construction for extended service life
• High tensile strength rating of 60,000 psi ensures reliable performance in demanding applications
• Precision Class 2A thread fit provides consistent engagement and reduces cross-threading risks
• Phillips drive compatibility with No. 2 size offers widespread tool accessibility
• Fully threaded design maximizes grip length and load distribution capabilities
• Regulatory compliance with ASME B18.13, RoHS 3, and REACH standards for quality assurance

Professional Applications & Engineering Value

These zinc-plated steel screws with external-tooth lock washers deliver exceptional vibration resistance in industrial environments where secure fastening is critical. The UNF fine thread configuration maintains superior clamping force in machinery, electrical enclosures, and automotive assemblies subject to constant movement. The Rockwell B69 hardness rating ensures thread integrity during repeated installations, while the pan head design provides a low-profile seating surface that won't interfere with adjacent components. Engineered for Class 2A thread fit precision, these fully threaded screws eliminate the need for additional locking mechanisms in vibration-prone applications, reducing assembly time and maintenance requirements.

Specification Summary & Compliance

This 10-32 x 3/4" screw features right-hand UNF fine threads with Class 2A tolerance for precise fitment. Manufacturing conforms to ASME B18.13 specifications for dimensional accuracy and performance. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental responsibility and workplace safety standards.