S-90276A270 1/4"-20 x 5" 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 industrial environments
- Exceptional tensile strength rated at 60,000 psi ensures reliable performance under heavy loads and stress conditions
- Precision UNC coarse threading with Class 2A fit provides secure fastening and easier installation in various materials
- Optimized partial threading design offers superior grip strength while reducing material usage and weight
- Standard slotted drive enables compatibility with common tools for straightforward installation and maintenance
- Rounded head profile provides smooth surface finish and reduces risk of snagging in assembly applications
- Comprehensive regulatory compliance ensures meeting strict industrial standards and environmental regulations
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws with 1/4"-20 UNC coarse thread configuration are engineered to address critical industrial fastening challenges. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures reliable performance in demanding applications where vibration resistance and structural integrity are paramount. The partial threading design concentrates thread engagement where it matters most, providing superior clamping force while minimizing material stress. The zinc plating delivers essential corrosion protection for machinery, equipment assemblies, and structural components exposed to industrial environments. These slotted drive screws are particularly valuable in maintenance operations and assembly lines where tool compatibility and quick installation are essential for operational efficiency.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerance for precision engagement. Features 1/4"-20 UNC coarse thread with right-hand orientation and partial threading up to 1½" minimum thread length. The 5" length and rounded head design meet industrial standards for dimensional consistency. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors and international markets.
