S-92240A114 1/4"-28 x 2 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Precise thread engagement with Class 2A fit and UNF fine threads ensuring secure, vibration-resistant connections
• Efficient installation and removal with external hex drive and standard 7/16" head width for common tool compatibility
• Full-length threading across the 2 1/2" length provides maximum grip and load distribution
• Regulatory compliance assurance meeting ASME B18.2.1 standards for dimensional accuracy and performance reliability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries

Professional Applications & Engineering Value

These 1/4"-28 UNF hex head screws deliver critical performance in demanding applications where corrosion resistance and mechanical integrity are paramount. The 18-8 Stainless Steel composition provides excellent protection against rust and chemical exposure in marine, food processing, and outdoor equipment applications. The UNF fine thread configuration offers superior resistance to vibrational loosening compared to coarse threads, making these fasteners ideal for machinery, automotive assemblies, and precision equipment. With Class 2A thread fit and full threading along the 2 1/2" length, installation is consistently precise while maximizing surface contact for enhanced joint strength. The external hex drive design ensures reliable torque transmission during installation, reducing the risk of tool slippage and fastener damage in high-torque applications.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit with 1/4"-28 UNF fine threads and right-hand thread direction. Manufacturing complies with ASME B18.2.1 dimensional standards, ensuring interchangeability and proper function. The fastener meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for global industrial applications requiring environmental compliance.