S-90400A212 8-32 x 1/4" 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
- Enhanced vibration resistance with integrated spring lock washer prevents loosening in high-stress environments
- Superior corrosion protection through zinc-plated steel construction for extended service life in harsh conditions
- Optimized driving efficiency with Phillips No. 2 drive and pan head design for secure tool engagement
- Maximum thread engagement through fully threaded UNC coarse pattern ensures superior holding power
- Reliable mechanical performance with 60,000 psi tensile strength and Rockwell B70 hardness rating
- Industry-standard compatibility with Class 2A thread fit for consistent installation across applications
- Comprehensive regulatory compliance meeting ASME B18.13, RoHS 3, and REACH requirements
Professional Applications & Engineering Value
These zinc-plated steel screws with integrated spring lock washers deliver critical vibration resistance in demanding industrial assemblies. The combination of UNC coarse threading and fully threaded design maximizes surface contact for superior grip strength in materials prone to stress fatigue. The Phillips pan head configuration provides optimal torque transmission while the zinc plating offers essential corrosion protection for equipment exposed to environmental challenges. Engineered to maintain integrity under 60,000 psi tensile loads, these 8-32 screws are ideal for machinery, electrical enclosures, and automotive components where reliable fastening is non-negotiable. The Class 2A thread fit ensures consistent installation across production runs while the locking washer mechanism eliminates maintenance concerns in vibration-prone applications.
Specification Summary & Compliance
This 8-32 x 1/4" screw features Class 2A thread fit with UNC coarse threading and complete threading along the shank. Manufacturing complies with ASME B18.13 specifications for dimensional accuracy and performance standards. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations regarding chemical safety. Mechanical properties include Rockwell B70 hardness and 60,000 psi tensile strength validation.
