S-90276A581 5/16"-18 x 3/4" 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 for extended service life in harsh environments
- High tensile strength of 60,000 PSI ensures reliable performance under heavy loads and vibration
- Rockwell B69 hardness provides excellent durability and resistance to wear during installation and use
- Class 2A thread fit offers consistent, reliable engagement while maintaining easy assembly
- Fully threaded UNC coarse design delivers maximum holding power and faster installation in various materials
- Slotted drive rounded head allows for straightforward installation with standard tools while providing a finished appearance
- Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality and environmental responsibility
Professional Applications & Engineering Value
This zinc-plated steel rounded head slotted screw delivers exceptional engineering value across industrial applications where corrosion resistance and mechanical strength are critical. The UNC coarse thread configuration provides superior pull-out resistance in wood, plastic, and soft metals, while the fully threaded design ensures maximum engagement depth for secure fastening. The zinc plating creates a protective barrier against oxidation and environmental factors, making these industrial fasteners ideal for outdoor equipment, machinery assemblies, and electrical enclosures. With its rounded head profile and slotted drive, this fastener combines aesthetic appeal with practical installation, serving perfectly in applications requiring both functional performance and visual cleanliness.
Specification Summary & Compliance
This fastener features precise Class 2A thread fit tolerances with UNC coarse thread (5/16"-18) specifications, ensuring consistent performance and interchangeability. Manufactured to ASME B18.6.3 standards for dimensional accuracy and mechanical properties, the screw maintains 60,000 PSI tensile strength and Rockwell B69 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry requirements for hazardous substance restrictions and chemical safety.
