S-90276A535 1/4"-20 x 3/8" ASME B18.6.3 Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-plated steel construction, ideal for harsh industrial environments
• High tensile strength of 60,000 psi ensures reliable load-bearing capacity and reduces failure risks
• Rockwell B69 hardness provides superior durability and resistance to wear during installation and use
• Coarse UNC threading with Class 2A fit offers quick assembly and secure fastening in various materials
• Slotted round head design allows for easy installation with standard tools and a low-profile finish
• Full threading along the 3/8" length maximizes grip and distribution of clamping force
• Compliance with ASME B18.6.3, RoHS 3, and REACH ensures safety, quality, and environmental standards are met

Professional Applications & Engineering Value

This zinc-plated steel slotted round head screw is engineered to address common industrial challenges, such as corrosion and mechanical stress in assembly applications. The UNC coarse thread and Class 2A thread fit provide excellent engagement in metals and plastics, reducing the risk of cross-threading and enabling faster installations in production lines. With a tensile strength of 60,000 psi and Rockwell B69 hardness, it withstands high-vibration environments, making it ideal for machinery, automotive components, and electrical enclosures. The rounded head and slotted drive offer a secure, low-profile fastening solution that minimizes protrusion and enhances safety in confined spaces.

Specification Summary & Compliance

This screw features precise inch-based dimensions, including a 1/4"-20 UNC coarse thread with Class 2A thread fit for consistent performance. It is manufactured in compliance with ASME B18.6.3 standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and suitable for global industrial use.