S-92198A905 7/8"-9 x 12" 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
- High tensile strength of 80,000 psi ensures reliable performance in heavy-duty applications
- Rockwell B70 hardness provides excellent durability and resistance to wear
- Coarse UNC thread design allows for faster installation and reduced cross-threading risks
- Class 2A thread fit guarantees consistent, precise engagement with standard nuts
- External hex drive enables easy tightening with common tools, reducing assembly time
- Partial threading offers optimal grip length for varied material thicknesses
Professional Applications & Engineering Value
This heavy-duty hex head screw is engineered to address critical challenges in industrial fastening. The 18-8 stainless steel material provides exceptional resistance to corrosion and oxidation, making it suitable for outdoor, marine, and chemical processing applications where environmental factors degrade ordinary fasteners. The coarse UNC thread and Class 2A fit ensure quick, secure assembly with minimal risk of stripping, while the external hex drive allows for high-torque installation using standard wrenches. With an 80,000 psi tensile strength and Rockwell B70 hardness, it maintains integrity under heavy loads and vibration, preventing joint failure in structural, machinery, and construction projects. The partial threading design offers flexibility for varying material thicknesses, reducing inventory needs for engineers and maintenance teams.
Specification Summary & Compliance
This 7/8"-9 UNC hex head screw features a 12" length with Class 2A thread fit and coarse thread spacing, manufactured to ASME B18.2.1 specifications for dimensional accuracy and performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use in industrial and commercial applications without hazardous substances.
