S-94070A539 1/4"-20 x 5/8" ASME B18.6.3 Brass Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction, ideal for harsh environments and electrical applications
• High tensile strength of 50,000 psi ensures reliable, long-lasting fastening under mechanical stress
• Excellent thread engagement with UNC coarse threading and Class 2A fit for quick assembly and vibration resistance
• Optimized drive performance featuring a Phillips No. 3 drive and pan head for secure, cam-out resistant installation
• Full threading along the 5/8" length provides maximum grip and uniform load distribution
• Consistent dimensional accuracy with a rounded pan head profile for flush mounting and professional finishes
• Compliance with major industry standards including ASME B18.6.3, ensuring quality and interchangeability

Professional Applications & Engineering Value

This 1/4"-20 brass machine screw is engineered to address critical challenges in industrial assembly, where corrosion resistance, electrical conductivity, and reliable fastening are paramount. The brass material naturally resists oxidation and galvanic corrosion, making it ideal for marine, plumbing, and electronic enclosures. The UNC coarse thread and Class 2A fit facilitate rapid installation while maintaining strong holding power in softer materials or where vibration is a concern. With a Phillips pan head design and full threading, it ensures easy drive engagement and maximum thread contact, reducing the risk of stripping and loosening over time. This combination of material properties and mechanical design delivers exceptional value for OEM manufacturing, maintenance repairs, and precision equipment where durability and regulatory compliance are non-negotiable.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit for standard tolerance and easy assembly. Manufactured to meet ASME B18.6.3 specifications, it ensures dimensional consistency and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in restricted substance-sensitive applications.