S-90121A542 1/4"-20 x 1" ASME B18.2.1 Stainless Steel Wire-Lockable Hex Head Screws
Stainless Steel Wire-Lockable 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 70,000 psi ensures reliable performance under heavy loads and vibration
- External hex drive design provides secure tool engagement and easy installation with standard wrenches
- Class 2A thread fit with UNC coarse threading offers excellent assembly tolerance and reduced cross-threading risk
- Full threading along the 1" length maximizes grip range and load distribution across applications
- Rockwell B70 hardness rating maintains thread integrity and prevents stripping during repeated use
- Compliance with ASME B18.2.1 and RoHS 3 standards guarantees quality manufacturing and environmental safety
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 18-8 stainless steel hex head screws combine corrosion resistance with high tensile strength to solve common fastening challenges in machinery, construction, and assembly lines. The UNC coarse thread and Class 2A fit ensure quick, secure installation in materials where vibration resistance is critical, while the external hex drive allows for high torque application without slippage. Ideal for heavy-duty fastening in environments exposed to moisture, chemicals, or temperature variations, these screws deliver long-term reliability and reduce maintenance costs by preventing premature failure and thread damage.
Specification Summary & Compliance
This 1/4"-20 x 1" hex head screw features precise Class 2A thread fit and UNC coarse threading per standard inch measurements, manufactured to meet ASME B18.2.1 specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) compliant, ensuring adherence to environmental regulations for hazardous substance restrictions, and supports industrial quality standards with verified 70,000 psi tensile strength and material consistency.
