S-92198A545 1/4"-20 x 1 3/8" 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 load-bearing capacity and joint integrity under stress.
- Rockwell B70 hardness provides excellent wear resistance and durability for repeated use.
- Coarse UNC threading with Class 2A fit offers faster assembly and secure fastening with reduced cross-threading risk.
- External hex drive and hex head design allows for easy installation and high torque application with standard tools.
- Partially threaded shank concentrates clamping force where needed, improving vibration resistance.
- Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global supply chains.
Professional Applications & Engineering Value
This 1/4"-20 UNC hex head screw in 18-8 stainless steel is engineered to address common industrial challenges such as corrosion, vibration loosening, and high-stress demands. The coarse thread design enables quick installation in materials like metal and hard plastics, reducing assembly time while maintaining a secure Class 2A thread fit. With an external hex drive, it supports high-torque applications in machinery, construction, and automotive systems, ensuring stable connections even in dynamic environments. The partially threaded configuration minimizes thread damage and optimizes clamping force, making it a reliable choice for industrial fasteners requiring durability and compliance with stringent regulations.
Specification Summary & Compliance
This screw adheres to ASME B18.2.1 specifications, with precise Class 2A thread fit for consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Dimensions include a 1/4"-20 UNC coarse thread, 1-3/8" length, and partially threaded design, manufactured to inch system standards for reliable integration in various applications.
