S-92198A119 1/4"-28 x 3 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 18-8 stainless steel construction, ideal for harsh industrial environments
- High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
- Precise Class 2A thread fit guarantees smooth assembly and consistent clamping force
- External hex drive design provides secure tool engagement and efficient installation
- Partial threading allows for optimal grip length control in varied material thicknesses
- Compliance with ASME B18.2.1 standards ensures dimensional accuracy and interchangeability
- RoHS 3 and REACH compliance meets stringent environmental regulations for global applications
Professional Applications & Engineering Value
This 1/4"-28 UNF hex head screw delivers exceptional engineering value in demanding applications where corrosion resistance and mechanical strength are critical. The 18-8 stainless steel material provides excellent durability against moisture, chemicals, and temperature variations, making it suitable for industrial machinery, marine equipment, and structural assemblies. The fine UNF thread and Class 2A thread fit ensure vibration resistance and precise torque transmission, reducing the risk of loosening in dynamic environments. With partial threading, it offers flexibility for applications requiring specific unthreaded shank lengths, while the external hex drive enables high-torque installation with standard tools. This combination of material properties and design features addresses common challenges like fastener failure, maintenance costs, and regulatory compliance in professional settings.
Specification Summary & Compliance
This hex head screw features a 1/4"-28 UNF fine thread with Class 2A thread fit for consistent dimensional accuracy. It is manufactured in accordance with ASME B18.2.1 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for restricted substance-controlled applications.
