S-90276A542 1/4"-20 x 1" 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 through zinc plating, extending service life in demanding industrial environments
- Superior tensile strength (60,000 psi) ensures reliable performance under high-stress applications
- Optimized thread engagement with Class 2A UNC coarse threads for faster assembly and reduced cross-threading risks
- Full threading design provides maximum grip and holding power across the entire fastener length
- Standard slotted drive offers compatibility with common tools while maintaining cost-effectiveness
- Consistent hardness (Rockwell B69) maintains structural integrity through repeated installation cycles
- Regulatory compliance meets ASME B18.6.3 specifications and environmental standards for global manufacturing
Professional Applications & Engineering Value
Engineered for industrial machinery assembly and equipment manufacturing, these zinc-plated steel screws address critical challenges in vibration-prone environments. The 1/4-20 UNC coarse thread configuration ensures rapid installation while maintaining secure fastening, particularly valuable in production lines where assembly speed impacts throughput. The fully threaded design distributes clamping force evenly, preventing joint loosening in applications subject to thermal cycling or mechanical stress. The rounded head profile with slotted drive provides reliable engagement with standard tools, making these industrial screws ideal for maintenance operations and OEM applications requiring consistent, repeatable fastening performance across multiple assembly points.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent engagement. Thread specification follows UNC coarse thread standards with 1/4"-20 threading and right-hand orientation. Compliant with ASME B18.6.3 manufacturing specifications for dimensional accuracy and performance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global supply chains and environmentally conscious manufacturing operations.
