S-91306A437 1/2"-13 x 1 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
- Superior corrosion resistance with zinc-plated alloy steel construction for extended service life in harsh industrial environments
- Exceptional load-bearing capacity with 120,000 psi tensile strength and Rockwell C39 hardness for heavy-duty applications
- Precise thread engagement with Class 3A thread fit ensuring reliable, vibration-resistant fastening connections
- Quick installation with 5/16" hex drive and fully threaded UNC coarse spacing for efficient assembly
- Reduced surface protrusion with low-profile rounded button head design for applications with clearance limitations
- Industry compliance assurance meeting ASME B18.3 and ASTM F835 standards for quality and performance reliability
- Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these zinc-plated alloy steel rounded head screws provide critical solutions where corrosion resistance and structural integrity are paramount. The combination of 120,000 psi tensile strength and Rockwell C39 hardness ensures reliable performance in heavy machinery, structural assemblies, and equipment manufacturing where vibration and dynamic loads are common. The fully threaded UNC coarse spacing with Class 3A thread fit delivers superior engagement in various materials, while the 5/16" hex drive facilitates efficient installation in confined spaces. These industrial screws are particularly valuable in manufacturing, construction, and automotive applications where consistent performance under stress and environmental exposure is essential for operational safety and longevity.
Specification Summary & Compliance
This 1/2"-13 x 1-1/2" rounded head screw features precision UNC coarse thread with Class 3A thread fit for optimal engagement and meets ASME B18.3 and ASTM F835 manufacturing specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international standards for hazardous substance restrictions and chemical safety in industrial applications.
