S-90400A194 8-32 x 1/2" ASME B18.13 Steel Pan Head Phillips Screws with Spring Lock Washer
Steel Pan Head Phillips Screws with Spring 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
- Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh environments
- Enhanced vibration resistance through integrated spring lock washer that maintains clamping force under dynamic loads
- Excellent holding power with fully threaded UNC coarse spacing for rapid installation and secure fastening
- High-strength performance delivering 60,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Precise thread engagement with Class 2A thread fit ensuring consistent, reliable connections
- Optimized drive efficiency featuring Phillips No. 2 drive for controlled torque application and reduced cam-out
- Comprehensive compliance meeting ASME B18.13 standards and environmental regulations for quality assurance
Professional Applications & Engineering Value
These zinc-plated steel screws with integrated spring lock washers provide critical vibration resistance in industrial assemblies where loosening under dynamic loads poses significant failure risks. The UNC coarse thread configuration enables rapid installation while maintaining exceptional pull-out strength, particularly valuable in production environments requiring high-volume fastening operations. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures reliable performance in structural applications, while the zinc plating offers essential corrosion protection for equipment exposed to industrial atmospheres. The Phillips pan head design with standard rounded profile facilitates flush mounting while providing ample bearing surface for secure connections in machinery, electrical enclosures, and automotive components.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread spacing (8-32 thread size). Fully compliant with ASME B18.13 mechanical specifications, RoHS 3 (2015/863/EU) for hazardous substance restrictions, and REACH (EC 1907/2006) regulations for chemical safety. Features include 1/2" length, 0.322" head diameter, and integrated spring lock washer (0.383" OD, 0.03" thickness) manufactured from zinc-plated steel.
