S-90275A587 5/16"-18 x 1 1/2" 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 for reliable performance under heavy stress
- Precise thread engagement with Class 2A fit and UNC coarse threading for faster assembly and reduced cross-threading risks
- Optimal flush mounting with standard 82° countersink angle and flat head design for seamless surface integration
- Enhanced durability with Rockwell B70 hardness to withstand mechanical wear and repeated installations
- Full-threaded design providing maximum grip length and uniform stress distribution along the entire fastener
- Industry compliance assurance meeting ASME B18.6.3 specifications for dimensional accuracy and performance reliability
Professional Applications & Engineering Value
These 5/16"-18 UNC flat head screws deliver critical engineering solutions where flush surface mounting and high tensile strength are paramount. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, machinery assemblies, and structural frameworks exposed to harsh operating conditions. The coarse UNC threading and Class 2A thread fit ensure rapid installation with reduced susceptibility to cross-threading, while the 82° countersink angle creates secure, vibration-resistant connections that maintain surface integrity. Ideal for manufacturing, automotive, and construction applications where ASME B18.6.3 compliance guarantees dimensional precision and load-bearing reliability.
Specification Summary & Compliance
Manufactured to exact Class 2A thread fit tolerances with UNC coarse thread spacing and right-hand threading. Fully compliant with ASME B18.6.3 dimensional standards and certified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features standard flat head profile with slotted drive style and manufactured in inch system measurements for consistent performance across industrial applications.
