S-90279A298 12-24 x 1 1/4" ASME B18.6.3 Steel Round Head Phillips Screws
Steel Round Head Phillips 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 demanding environments
- Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B69 hardness to withstand high-stress applications
- Reliable fastening performance through Class 2A thread fit ensuring precise engagement and vibration resistance
- Enhanced installation efficiency with Phillips No. 3 drive design providing secure tool engagement and reduced cam-out
- Versatile coarse thread design (UNC 12-24) enabling quick assembly and superior holding power in various materials
- Full-threaded length optimization maximizing grip range and load distribution across the entire fastener
- Industry-standard compliance meeting ASME B18.6.3 specifications for consistent quality and interchangeability
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws with 12-24 UNC coarse threading deliver critical solutions for industrial assembly challenges. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures reliable performance in high-vibration environments where fastener integrity is paramount. The Phillips No. 3 drive facilitates efficient installation while minimizing stripping, and the fully threaded design provides maximum engagement depth for superior pull-out resistance. Particularly valuable in electrical enclosures, machinery assembly, and structural frameworks, these ASME B18.6.3 compliant screws offer engineers a trusted fastening solution that maintains clamping force under dynamic loads and environmental exposure.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC 12-24 coarse threads and right-hand threading orientation. Fully compliant with ASME B18.6.3 manufacturing standards, ensuring dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for restricted substance compliance. The 1-1/4" length and standard rounded head profile maintain consistent performance across industrial applications requiring reliable threaded fasteners.
