S-91306A282 1/4"-20 x 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 with zinc-plated alloy steel construction for long-lasting performance in harsh industrial environments
- Superior load-bearing capacity with 120,000 psi tensile strength and Rockwell C39 hardness for heavy-duty applications
- Precise, reliable fastening through Class 3A thread fit ensuring minimal play and vibration resistance
- Quick installation and removal with 5/32" hex drive and UNC coarse threading for efficient assembly
- Enhanced clearance and aesthetic appeal from the rounded button head design that reduces snagging risks
- Full-thread engagement along the 2" length for maximum grip strength in demanding setups
- Regulatory peace of mind with compliance to ASME B18.3, ASTM F835, RoHS 3, and REACH standards
Professional Applications & Engineering Value
Engineered for industrial and heavy-duty applications, these zinc-plated alloy steel rounded head screws deliver critical performance where reliability is non-negotiable. The Class 3A thread fit and UNC coarse threading ensure rapid assembly with high resistance to loosening under vibration, making them ideal for machinery, automotive, and construction frameworks. The fully threaded design maximizes clamping force over the entire 2" length, while the rounded button head provides a low-profile finish that minimizes interference. Combined with 120,000 psi tensile strength, these screws address common failure points—such as shear stress and environmental wear—offering a durable, compliant fastening solution for engineers and procurement specialists.
Specification Summary & Compliance
This 1/4-20 x 2" screw adheres to precise dimensional standards, including Class 3A thread fit for tight tolerances and UNC coarse thread spacing. It meets ASME B18.3 and ASTM F835 manufacturing specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material restrictions adherence.
