S-91802A004 5/16"-18 x 5/8" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws
Stainless Steel Phillips Oval Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
- Optimized installation efficiency through Phillips No. 4 drive and fully threaded UNC coarse design
- Precise thread engagement with Class 2A thread fit ensuring consistent fastening accuracy
- Enhanced flush mounting capability with standard oval head profile and 82° countersink angle
- Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards
- Versatile industrial application with right-hand threading and 5/8" length for diverse assembly requirements
Professional Applications & Engineering Value
These passivated 18-8 stainless steel oval head flat head screws deliver critical corrosion resistance and mechanical reliability for demanding industrial applications. The fully threaded UNC coarse design ensures rapid installation and superior holding power in machinery, electrical enclosures, and structural assemblies where vibration resistance is paramount. The oval head profile with 82° countersink provides flush surface mounting while maintaining structural integrity. Engineered to ASME B18.6.3 specifications, these screws prevent galvanic corrosion in mixed-material assemblies and maintain performance in temperature-fluctuating environments, making them ideal for OEM manufacturing, maintenance operations, and corrosive processing facilities.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse threading (5/16"-18). Full compliance with ASME B18.6.3 manufacturing specifications. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. Standard oval head profile with 0.635" head diameter and 5/8" length maintains consistent dimensional accuracy across production batches.
