S-92800A257 1/2"-20 x 5 1/2" 18-8 Stainless Steel Hex Head Screws
18-8 Stainless Steel Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh or outdoor environments.
- High tensile strength of 80,000 PSI ensures reliable performance under heavy loads and vibration.
- Precise Class 2A thread fit provides smooth assembly and secure fastening with reduced risk of cross-threading.
- External hex drive design allows for high torque application using standard tools, speeding up installation.
- Fine UNF threading offers better adjustment and holding power in materials prone to stripping.
- Partial threading enables unthreaded shank to act as a dowel, improving alignment and shear resistance.
- Full compliance with RoHS 3 and REACH ensures safe use in regulated industrial and consumer applications.
Professional Applications & Engineering Value
This 18-8 stainless steel hex head screw is engineered to address common industrial challenges such as corrosion, high stress, and assembly efficiency. The 1/2"-20 UNF fine thread and Class 2A fit provide excellent grip in soft metals or plastics, reducing the likelihood of thread failure. With an 80,000 PSI tensile strength and Rockwell B70 hardness, it withstands dynamic loads in machinery, automotive, and construction applications. The external hex drive ensures quick, tool-friendly installation, while the partial threading adds structural integrity by allowing an unthreaded portion to bear shear forces. Its corrosion-resistant properties make it suitable for marine, chemical, and food processing equipment, ensuring long-term reliability without frequent maintenance.
Specification Summary & Compliance
This screw adheres to UNF thread standards with a Class 2A thread fit for consistent dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of hazardous substances. Manufacturing follows industry norms for inch-system measurements, with precise thread spacing and length tolerances suitable for industrial fastening applications.
