S-90276A576 5/16"-18 x 3/8" 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
- Enhanced corrosion resistance with zinc plating for reliable performance in industrial environments
- Superior thread engagement due to UNC coarse threading, ensuring faster assembly and reduced cross-threading risks
- High mechanical strength from Rockwell B69 hardness, providing dependable load-bearing capacity
- Secure and precise fastening with Class 2A thread fit, maintaining consistent torque and clamp load
- Full-length threading for maximum grip along the entire 3/8" length, ideal for varied material thicknesses
- Easy manual installation with a standard slotted drive, compatible with common screwdrivers
- Broad regulatory compliance including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and environmental standards
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these zinc-plated steel rounded head screws address common challenges like vibration loosening and environmental exposure. The UNC coarse thread design enables quick installation in soft materials or pre-tapped holes, reducing assembly time while the fully threaded construction ensures uniform stress distribution. With a rounded head profile and slotted drive, they offer a low-profile finish that minimizes snagging in machinery and equipment. The Rockwell B69 hardness provides excellent durability against wear, making these screws ideal for automotive, construction, and metal fabrication projects where high-strength fastening and regulatory adherence are critical.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, with a diameter of 0.313" and coarse thread spacing. Manufactured in accordance with ASME B18.6.3 specifications, it ensures dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances for safe use in global markets.
