S-90402A194 8-32 x 1/2" ASME B18.13 Steel Pan Head Phillips Screws with External-Tooth Lock Washer
Steel Pan Head Phillips Screws with External-Tooth Lock Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced Vibration Resistance: Integrated external-tooth lock washer prevents loosening under dynamic loads, ensuring reliable performance in high-stress environments.
- Superior Corrosion Protection: Zinc-plated steel construction offers excellent rust resistance, extending service life in harsh industrial conditions.
- Optimized Drive Efficiency: Phillips No. 2 drive enables quick, secure installation with standard tools, reducing assembly time and labor costs.
- High Load-Bearing Capacity: 60,000 psi tensile strength and Rockwell B69 hardness provide exceptional durability for heavy-duty applications.
- Reliable Thread Engagement: Fully threaded UNC coarse spacing ensures fast installation and superior holding power in various materials.
- Standardized Compatibility: Class 2A thread fit guarantees precise interchangeability with standard UNC components, minimizing inventory complexity.
- Regulatory Assurance: Compliant with ASME B18.13, RoHS 3, and REACH for guaranteed quality and environmental safety in global supply chains.
Professional Applications & Engineering Value
These zinc-plated steel pan head screws with integrated external-tooth lock washers deliver critical vibration resistance in demanding industrial assemblies. The UNC coarse thread design enables rapid installation in metal, plastic, and composite materials while maintaining 60,000 psi tensile strength for structural integrity. Engineers specify these fully threaded screws for machinery, electrical enclosures, and automotive components where Rockwell B69 hardness prevents stripping and deformation. The Phillips drive accommodates high-torque applications without cam-out, making them ideal for production lines requiring consistent, reliable fastening solutions.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances with UNC coarse spacing (8-32 thread size). Complies with ASME B18.13 manufacturing standards, RoHS 3 (2015/863/EU) for hazardous substance restrictions, and REACH (EC 1907/2006) regulations for chemical safety. All dimensions conform to inch system specifications including 1/2" length and 0.322" head diameter.
