S-90276A585 5/16"-18 x 1 1/4" ASME B18.6.3 Steel Round Head Slotted Screws
Steel Round Head Slotted 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, extending service life in demanding industrial environments
- Reliable fastening performance with 60,000 psi tensile strength and Rockwell B69 hardness for high-stress applications
- Quick installation and removal through standard slotted drive design compatible with common tools
- Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure connections in various materials
- Full-length threading provides maximum grip along the entire shank for enhanced holding power
- Rounded head design offers smooth finished appearance while minimizing snagging hazards
- Regulatory compliance meets ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws deliver exceptional value in industrial assembly where corrosion resistance and mechanical strength are paramount. The UNC coarse thread configuration ensures rapid installation in metal, wood, and composite materials while maintaining Class 2A thread fit precision for consistent clamping force. The combination of 60,000 psi tensile strength and Rockwell B69 hardness provides reliable performance in vibration-prone environments, making them ideal for machinery, equipment manufacturing, and structural applications. The slotted drive offers compatibility with standard tools, while the rounded head profile presents a finished appearance important for consumer-facing products and OEM assemblies.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerances ensuring precise dimensional accuracy. The 5/16"-18 UNC coarse thread provides optimal performance in various materials. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility, while the inch system measurements maintain compatibility with North American industrial specifications. Fully threaded design guarantees maximum thread engagement throughout the 1-1/4" length.
