S-98130A700 1/2"-13 x 4" Pentagon Head Screws
Pentagon Head 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 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile rating and Rockwell B70 hardness for heavy-duty applications
- Optimized torque transmission through the external pentagon drive and 13/16" drive size, preventing tool slippage
- Reliable coarse threading with UNC Class 2A fit ensures quick assembly and vibration resistance
- Full-length threading provides maximum grip and load distribution across the entire 4" length
- Tamper-resistant pentagon head design enhances security in public or restricted access installations
- Full regulatory compliance with RoHS 3 and REACH standards for global industrial use
Professional Applications & Engineering Value
This 1/2"-13 UNC pentagon head screw delivers critical performance where standard fasteners fail. The 18-8 stainless steel composition provides excellent corrosion resistance for outdoor infrastructure, marine equipment, and chemical processing facilities. The external pentagon drive and substantial 13/16" drive size enable high-torque installation without stripping, while the coarse thread spacing ensures rapid assembly in structural steel, heavy machinery, and transportation applications. With fully threaded design and Class 2A thread fit, it maintains consistent clamping force in high-vibration environments, making it ideal for bridge construction, industrial platforms, and permanent installations requiring tamper-resistant security.
Specification Summary & Compliance
This pentagon head screw features precision UNC coarse threads with Class 2A tolerance for reliable fitment. Manufacturing adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards. The right-hand thread direction and 1/2"-13 thread size ensure compatibility with standard industrial components, while the 4" length and fully threaded design provide versatile fastening solutions across multiple material thicknesses.
