S-91306A383 1/4"-20 x 1" 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 capability with 120,000 psi tensile strength to withstand high-stress applications without failure
- Precise thread engagement through Class 3A thread fit ensuring reliable fastening and vibration resistance
- Optimized installation efficiency with 5/32" hex drive providing secure tool engagement and reduced slippage
- Enhanced durability from Rockwell C39 hardness maintaining structural integrity under repeated use
- Broad compatibility with UNC coarse threading for quick assembly across standard industrial components
- Regulatory compliance assurance meeting ASME B18.3, ASTM F835, RoHS 3, and REACH standards for global supply chain integration
Professional Applications & Engineering Value
These zinc-plated alloy steel rounded head screws deliver critical performance where vibration resistance and corrosion protection are paramount. The fully threaded UNC coarse spacing enables rapid installation in machinery assembly, automotive components, and structural frameworks, while the Class 3A thread fit eliminates loosening under dynamic loads. The button head profile provides a low-profile finish for clearance-critical applications without compromising the 120,000 psi tensile strength. Ideal for maintenance operations and OEM manufacturing, these industrial screws combine ASME B18.3 compliance with environmental regulations for global project suitability.
Specification Summary & Compliance
Manufactured to Class 3A thread tolerances with UNC coarse thread spacing (1/4"-20), these screws conform to ASME B18.3 and ASTM F835 specifications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) ensures adherence to international environmental and safety standards. The inch-system measurements maintain precision across all dimensions including head diameter (0.437") and length (1").
