S-94444A127 1/2"-13 x 2 1/2" 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
- Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Reliable thread engagement due to Class 2A thread fit and coarse UNC threading for quick assembly
- Easy installation and removal with external hex drive and 3/4" head width for standard wrench use
- Optimized load distribution from partially threaded design, reducing stress concentration
- Compliance with industry standards including ASME B18.2.1, ensuring dimensional accuracy and interchangeability
- Environmental and safety compliance with RoHS 3 and REACH regulations for sustainable sourcing
Professional Applications & Engineering Value
This 1/2"-13 UNC Hex Head Screw in Black-Oxide 18-8 Stainless Steel is engineered to address critical industrial challenges. The coarse thread design and Class 2A thread fit ensure rapid, secure fastening in structural assemblies, machinery, and construction projects, minimizing installation time. The partially threaded shank enhances fatigue resistance by concentrating clamping force where needed. With a tensile strength of 80,000 psi and corrosion-resistant coating, it withstands heavy loads and moisture-prone environments, reducing maintenance costs. Ideal for OEM manufacturing, infrastructure, and marine applications, this screw delivers consistent performance under stress while meeting rigorous ASME B18.2.1 specifications.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC coarse thread with Class 2A thread fit for precise dimensional tolerance, a length of 2 1/2", and a minimum thread length of 1 1/4". Manufactured in accordance with ASME B18.2.1 standards, it ensures compatibility and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory adherence in industrial supply chains.
