S-92198A527 5/8"-11 x 18" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws
18-8 Stainless Steel Hex 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
- Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
- High tensile strength of 80,000 psi ensures reliable performance under heavy loads and prevents fastener failure.
- Rockwell B70 hardness provides superior wear resistance, extending the screw's service life in high-abrasion scenarios.
- Coarse UNC threading and Class 2A thread fit allow for quicker installation and better vibration resistance in structural applications.
- Partially threaded 18" length design offers optimal grip range and clamping force for thick materials and heavy assemblies.
- External hex drive and standard hex head enable easy installation and removal with common tools, reducing assembly time.
- Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees material safety, quality consistency, and regulatory acceptance for global projects.
Professional Applications & Engineering Value
This 5/8"-11 UNC hex head screw is engineered from 18-8 stainless steel to address critical challenges in heavy machinery, construction, and infrastructure projects. Its coarse thread and Class 2A fit provide excellent grip in wood, metal, and composite substrates, resisting loosening under dynamic stresses. The partially threaded shank concentrates clamping force precisely where needed, minimizing material distortion. With 80,000 psi tensile strength and Rockwell B70 hardness, it withstands extreme mechanical and environmental demands, making it a dependable choice for structural supports, industrial equipment, and marine applications where corrosion resistance and long-term reliability are non-negotiable.
Specification Summary & Compliance
This inch-system fastener features a 5/8"-11 UNC coarse thread with Class 2A thread fit for standard tolerance and interchangeability. It is manufactured in compliance with ASME B18.2.1 dimensional and mechanical standards. The screw meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, ensuring it is free from hazardous substances and suitable for use in regulated industrial and international markets.
