S-98130A710 1/2"-13 x 4 1/2" 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, ensuring long-term reliability in harsh environments.
- High tensile strength of 70,000 PSI provides dependable load-bearing capacity for demanding industrial applications.
- Rockwell B70 hardness offers excellent wear resistance and durability under repetitive stress.
- External pentagon drive (13/16") allows for secure tool engagement and high-torque installation without stripping.
- Class 2A thread fit with UNC coarse threading ensures easy assembly and reliable performance in various materials.
- Fully threaded design maximizes grip and holding power across the entire 4 1/2" length.
- Compliance with RoHS 3 and REACH guarantees environmentally safe use in regulated industries.
Professional Applications & Engineering Value
This 18-8 stainless steel pentagon head screw is engineered to address critical fastening challenges in industrial, construction, and mechanical systems. Its high tensile strength (70,000 PSI) and Rockwell B70 hardness provide exceptional resistance to vibration loosening and mechanical fatigue, making it ideal for heavy-duty applications. The external pentagon drive design prevents cam-out during high-torque installation, ensuring secure fastening in structural assemblies. With UNC coarse threads and Class 2A fit, it offers quick installation and reliable performance in metals, plastics, and composite materials, while the fully threaded shank enhances load distribution. The corrosion-resistant properties of 18-8 stainless steel make it suitable for outdoor, marine, and chemical-exposed environments, reducing maintenance costs and extending service life.
Specification Summary & Compliance
This fastener features a 1/2"-13 UNC coarse thread with Class 2A fit for standard dimensional accuracy and ease of assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances. Manufactured to meet industry standards for inch-system measurements, it guarantees consistent performance in mechanical and structural applications.
