S-91306A384 1/4"-20 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 plating, extending service life in demanding industrial environments.
- Exceptional mechanical strength from alloy steel, offering a high 120,000 psi tensile strength for reliable load-bearing applications.
- Precise and secure fastening ensured by Class 3A thread fit, minimizing the risk of loosening under vibration.
- Efficient installation and removal with a 5/32" hex drive, providing a positive grip and reducing tool slippage.
- Optimized for coarse-thread applications using UNC 1/4"-20 threading, enabling quicker assembly and better performance in softer materials.
- Low-profile, rounded button head design for a finished appearance and reduced risk of snagging.
- Full compliance with major industry standards including ASME B18.3 and ASTM F835, guaranteeing quality and interchangeability.
Professional Applications & Engineering Value
This zinc-plated alloy steel rounded head screw is engineered to solve critical challenges in industrial assembly and machinery. Its high tensile strength (120,000 psi) and Rockwell C39 hardness provide the structural integrity needed for high-stress joints, preventing failure in dynamic applications. The fully threaded UNC coarse spacing design offers superior pull-out resistance in materials like aluminum and soft metals, making it ideal for heavy equipment, automotive frames, and structural fabrications. The combination of a durable zinc-plated finish for corrosion protection and a reliable hex drive ensures long-term performance and ease of maintenance, reducing downtime and total cost of ownership for B2B operations.
Specification Summary & Compliance
This fastener features a 1/4"-20 UNC thread with a Class 3A fit for high precision. It is manufactured to meet ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental standards for global industrial use.
