S-91500A347 5/16"-18 x 5/8" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat 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 in harsh environments due to 316 stainless steel construction and passivated finish
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
- Precise Class 2A thread fit provides smooth installation and secure fastening in industrial applications
- Full threading design offers maximum grip length and uniform stress distribution
- Standard 82° countersink angle enables flush mounting for clean, professional finishes
- Phillips drive compatibility allows for efficient installation with common tools
- Compliance with ASME B18.6.3 guarantees dimensional accuracy and interchangeability
Professional Applications & Engineering Value
This 5/16"-18 UNC flat head screw delivers exceptional engineering value for demanding industrial applications where corrosion resistance and structural integrity are critical. Manufactured from 316 stainless steel with a passivated finish, it provides superior protection against chemical exposure, saltwater environments, and industrial contaminants. The coarse UNC thread design ensures rapid installation and strong holding power in various materials, while the fully threaded configuration maximizes engagement in both thin and thick substrates. The flat head profile with standard 82° angle creates seamless flush mounting in countersunk applications, making it ideal for machinery, marine equipment, food processing systems, and structural assemblies where surface smoothness and corrosion prevention are paramount.
Specification Summary & Compliance
This flat head Phillips screw features precise Class 2A thread fit with 5/16"-18 UNC coarse threads and right-hand threading direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
