S-91306A304 3/8"-16 x 2 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, ideal for harsh industrial environments
- Exceptional load-bearing capacity with 120,000 psi tensile strength and Rockwell C39 hardness for reliable performance under stress
- Precise, secure fastening ensured by Class 3A thread fit and UNC coarse spacing, reducing the risk of loosening
- Easy installation and removal with 7/32" hex drive and rounded button head design, minimizing tool slippage
- Full thread engagement along the 2 1/2" length for maximum grip and stability in demanding applications
- Compliance with industry standards including ASME B18.3 and ASTM F835, ensuring consistent quality and safety
- Environmentally responsible design with RoHS 3 and REACH compliance, meeting global regulatory requirements
Professional Applications & Engineering Value
These zinc-plated alloy steel rounded head screws are engineered to address common industrial challenges such as vibration-induced loosening and corrosion in demanding settings. The UNC coarse thread and Class 3A fit provide excellent holding power in materials like metal and thick plastics, while the hex drive ensures efficient torque application without stripping. Ideal for machinery assembly, structural frameworks, and automotive components, these screws offer high tensile strength and durability, reducing maintenance needs and downtime. The fully threaded design enhances load distribution, making them a reliable choice for heavy-duty industrial applications where consistent performance is critical.
Specification Summary & Compliance
This screw features precise UNC 3/8"-16 coarse thread spacing with Class 3A fit for tight tolerances and reliable engagement. Manufactured in compliance with ASME B18.3 and ASTM F835 standards, it ensures consistent dimensional accuracy and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use.
