S-91255A194 8-32 x 1/2" ASTM F835 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive 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
- Exceptional corrosion resistance from black-oxide coating, extending service life in harsh industrial environments
- Superior mechanical strength with 120,000 psi tensile strength and Rockwell C39 hardness for heavy-duty applications
- Precise thread engagement with Class 3A fit and UNC coarse threads ensuring reliable fastening performance
- Optimized installation efficiency through 3/32" hex drive design providing secure tool engagement
- Maximum holding power achieved through fully threaded design distributing load evenly across the entire length
- Reduced surface protrusion with rounded button head profile for applications requiring low-profile fasteners
- Regulatory compliance assurance meeting ASME B18.3, ASTM F835, RoHS 3, and REACH standards
Professional Applications & Engineering Value
These 8-32 UNC coarse thread rounded head screws deliver critical performance advantages in demanding industrial settings where vibration resistance and long-term reliability are paramount. The black-oxide alloy steel construction provides enhanced corrosion protection while maintaining the high tensile strength required for structural applications. The coarse thread design ensures rapid installation and superior holding power in various materials, while the fully threaded configuration maximizes engagement depth for critical assemblies. Engineered to withstand extreme mechanical stress, these hex drive screws are ideal for machinery, equipment manufacturing, and automotive applications where precision fastening and durability are essential requirements.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse thread specifications ensuring consistent performance. These rounded head screws comply with ASME B18.3 dimensional requirements and ASTM F835 material specifications. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, confirming the absence of restricted substances. The combination of 1/2" length and fully threaded design provides versatile application capability while maintaining strict quality control throughout manufacturing.
