S-90403A159 6-32 x 1 3/4" ASME B18.13 Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior vibration resistance with integrated internal-tooth lock washers that maintain secure fastening in high-motion environments
• Excellent corrosion protection through zinc-plated steel construction, extending service life in demanding industrial conditions
• Optimized torque transfer via Phillips No. 2 drive design, reducing cam-out and ensuring efficient installation
• High mechanical strength with 60,000 psi tensile strength and Rockwell B69 hardness for reliable performance under stress
• Quick assembly advantage with UNC coarse threading that facilitates faster installation and reduces cross-threading risks
• Precise fit guarantee through Class 2A thread fit standards, ensuring consistent performance and interchangeability
• Full-thread engagement providing maximum grip strength across the entire fastener length

Professional Applications & Engineering Value

Engineered for demanding industrial applications where vibration resistance and reliable fastening are critical, these zinc-plated steel pan head screws with internal-tooth lock washers solve common mechanical failure points in assembly operations. The combination of UNC coarse threading and Class 2A fit ensures rapid installation while maintaining precision alignment in machinery, electronic enclosures, and automotive components. The Phillips No. 2 drive design provides optimal torque transmission without stripping, while the integrated locking mechanism prevents loosening under continuous vibration - a common challenge in manufacturing equipment, transportation systems, and heavy-duty enclosures. These fully threaded screws deliver uniform clamping force across their entire length, making them ideal for applications requiring consistent pressure distribution.

Specification Summary & Compliance

This 6-32 x 1 3/4" screw features precise Class 2A thread fit with UNC coarse threading standards for reliable engagement. Manufactured to meet ASME B18.13 specifications, these fasteners ensure dimensional accuracy and performance consistency. The product maintains full compliance with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, confirming adherence to international safety and environmental standards for industrial components.