S-90275A580 5/16"-18 x 5/8" ASME B18.6.3 Steel Slotted Flat Head Screws
Steel Slotted 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 with zinc-plated steel construction for extended service life in demanding environments
- Exceptional load-bearing capacity with 60,000 psi tensile strength to withstand high-stress applications
- Precise thread engagement with Class 2A fit and UNC coarse threads for reliable fastening and vibration resistance
- Optimized flush mounting with standard 82° countersink angle for seamless surface integration
- Enhanced durability with Rockwell B70 hardness to maintain structural integrity under repeated use
- Full-threaded design ensures maximum grip length and consistent holding power across the entire fastener
- Industry compliance meeting ASME B18.6.3 standards for guaranteed dimensional accuracy and performance
Professional Applications & Engineering Value
This 5/16"-18 UNC flat head slotted screw delivers critical engineering solutions for industrial assembly challenges. The zinc-plated steel construction provides essential corrosion protection in manufacturing environments, while the coarse thread spacing and Class 2A thread fit ensure rapid installation and secure fastening in materials where fine threads might strip. The 82° countersink angle allows for flush mounting in precision applications, eliminating protrusions that could interfere with moving components. With full threading and right-hand direction, these screws offer maximum engagement depth for critical joints in machinery, equipment frames, and structural assemblies where vibration resistance and long-term reliability are paramount.
Specification Summary & Compliance
This fastener maintains Class 2A thread fit tolerance per UNC standards with 5/16"-18 thread size and coarse thread spacing. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components.
