S-90220A110 1/4"-20 x 1/2" Vented Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• High-strength reliability offering 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Efficient installation and removal through external hex drive and 7/16" head width for secure tool engagement
• Optimized pressure equalization with vented screw design (0.062" vent diameter) to prevent pressure buildup
• Consistent thread engagement with Class 2A UNC coarse threads ensuring reliable fastening in various materials
• Full-length threading provides maximum grip and load distribution along the entire 1/2" length
• Regulatory compliance meeting RoHS 3 and REACH standards for safe use in industrial and international markets

Professional Applications & Engineering Value

Engineered for industrial applications where corrosion resistance and structural integrity are paramount, these 1/4"-20 UNC hex head screws deliver exceptional performance in demanding environments. The 18-8 stainless steel composition provides excellent protection against rust and chemical exposure, while the vented screw technology addresses pressure differential issues common in sealed systems and equipment enclosures. With 70,000 psi tensile strength and Rockwell B70 hardness, these fully threaded screws maintain clamping force under vibration and thermal cycling. The coarse thread design ensures quick installation in various materials, making them ideal for assembly lines, machinery manufacturing, and structural frameworks where reliability and efficiency are critical.

Specification Summary & Compliance

This 1/4"-20 UNC hex head screw features Class 2A thread fit per standard inch system requirements, ensuring precise dimensional accuracy and interchangeability. Manufacturing complies with industry standards for external hex drive fasteners with specified dimensions: 1/2" length, 7/16" head width, and 5/32" head height. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, confirming environmental safety and regulatory acceptance for global industrial applications.