S-90121A537 1/4"-20 x 1/2" 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
- Exceptional tensile strength rated at 70,000 psi for reliable performance in demanding applications
- Precise Class 2A thread fit ensures smooth installation and secure fastening connections
- Full threading design provides maximum grip length and uniform load distribution
- External hex drive compatibility allows for standard tooling and efficient installation
- UNC coarse threading enables quick assembly and reduced cross-threading risks
- Comprehensive compliance with ASME B18.2.1 standards and RoHS 3 environmental regulations
Professional Applications & Engineering Value
These 18-8 stainless steel hex head screws deliver critical engineering advantages in industrial fastening applications where corrosion resistance and mechanical strength are paramount. The combination of Rockwell B70 hardness and 70,000 psi tensile strength ensures reliable performance in structural assemblies, machinery, and equipment subjected to vibration and dynamic loads. The UNC coarse threading with Class 2A fit provides excellent engagement in various materials while minimizing installation time. The fully threaded design offers consistent clamping force along the entire length, making these industrial hex screws ideal for applications requiring uniform stress distribution and maximum holding power in manufacturing, construction, and heavy equipment sectors.
Specification Summary & Compliance
This 1/4"-20 x 1/2" hex head screw features precise Class 2A thread fit with UNC coarse threading and right-hand thread direction. Manufactured to ASME B18.2.1 specifications with full compliance to RoHS 3 (2015/863/EU) regulations. The external hex drive configuration (7/16" head width) ensures compatibility with standard industrial tools, while the 18-8 stainless steel material provides consistent performance across temperature variations and corrosive environments.
