S-90275A593 5/16"-18 x 2 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 protection with zinc-plated steel construction, ensuring long-lasting performance in demanding environments
- High-strength reliability with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Precise flush mounting thanks to the standard flat head profile and 82° countersink angle for seamless surface integration
- Easy installation and removal with slotted drive design compatible with standard tools
- Consistent thread engagement from UNC coarse threading and Class 2A fit, providing secure fastening in various materials
- Full-length threading for maximum grip and load distribution across the entire fastener length
- Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for safe industrial use
Professional Applications & Engineering Value
This 5/16"-18 UNC flat head slotted screw is engineered to address critical industrial fastening challenges where surface flushness and high tensile strength are paramount. The zinc-plated steel construction provides excellent corrosion resistance, making it ideal for machinery, equipment assembly, and structural applications exposed to environmental elements. The fully threaded design ensures maximum holding power in wood, metal, and composite materials, while the 82° countersink angle allows for clean, recessed installation that prevents snagging and maintains aerodynamic surfaces. With its coarse UNC threading and Class 2A fit, this fastener delivers reliable performance in vibration-prone environments, reducing maintenance needs and downtime in manufacturing, construction, and automotive sectors.
Specification Summary & Compliance
This fastener maintains precise Class 2A thread fit tolerances and UNC coarse thread specifications per ASME B18.6.3 manufacturing standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial distribution and use.
