S-92198A440 1/2"-20 x 2 3/4" 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 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional load-bearing capacity with 80,000 psi tensile strength for heavy-duty applications
- Precise thread engagement with Class 2A fit and UNF fine threading for secure, vibration-resistant connections
- Easy installation and removal with standard 3/4" external hex head design using common tools
- Optimized thread distribution with partial threading for controlled clamping force in specific applications
- Long-term reliability with Rockwell B70 hardness maintaining structural integrity under stress
- Regulatory compliance assurance meeting ASME B18.2.1 standards and environmental regulations
Professional Applications & Engineering Value
This 18-8 stainless steel hex head screw delivers critical performance advantages in demanding industrial settings where corrosion resistance and mechanical strength are paramount. The 1/2"-20 UNF fine threading with Class 2A fit provides superior vibration resistance compared to coarse threads, making it ideal for machinery, equipment assembly, and structural applications where loosening under dynamic loads is a concern. The partially threaded design allows for precise clamping control in multi-material assemblies, while the external hex drive ensures compatibility with standard installation tools. With its 80,000 psi tensile strength and corrosion-resistant properties, this fastener solves critical challenges in manufacturing, construction, and heavy equipment industries where fastener failure can lead to costly downtime.
Specification Summary & Compliance
This hex head screw features precision Class 2A thread fit with 1/2"-20 UNF fine threading in right-hand direction, manufactured to ASME B18.2.1 specifications. The 2 3/4" length provides 1 1/4" minimum thread engagement, ensuring proper fastening depth. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility, while the inch system measurements maintain compatibility with North American industrial standards.
