S-90400A314 6-32 x 5/16" 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 that maintains clamping force under dynamic loads
- Superior corrosion protection through zinc-plated steel construction for extended service life in harsh environments
- Optimized drive engagement with Phillips No. 2 drive for efficient installation and reduced cam-out risk
- Reliable thread performance through Class 2A UNC coarse threads ensuring consistent fastening in various materials
- High mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Secure rounded pan head design providing low-profile installation with improved surface contact
- Full thread coverage along the 5/16" length for maximum grip and load distribution
Professional Applications & Engineering Value
These zinc-plated steel Phillips pan head screws with integrated spring lock washers deliver critical vibration resistance in industrial assemblies where loosening under dynamic loads poses significant reliability concerns. The UNC coarse thread configuration with Class 2A fit ensures rapid installation in various substrates while maintaining precise thread engagement. The combination of 60,000 psi tensile strength and Rockwell B70 hardness provides exceptional durability for machinery, electrical enclosures, and automotive components where mechanical stress and environmental factors challenge fastener integrity. The fully threaded design maximizes holding power across the entire fastener length, making these rounded head screws ideal for applications requiring consistent clamping force and reliable performance in vibration-prone environments.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread specifications. These screws comply with ASME B18.13 manufacturing standards and feature full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The spring lock washer component maintains consistent performance within specified parameters of 0.32" OD and 0.03" thickness, ensuring reliable locking action throughout the product lifecycle.
