S-92480A602 1/4"-20 x 3" ASME B18.6.3 Brass Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction, ideal for harsh industrial environments and electrical applications
• Exceptional mechanical strength with 50,000 psi tensile strength and Rockwell B50 hardness for reliable, long-term fastening
• Optimized flush mounting with a standard 82° countersink angle and flat head design for a smooth, secure finish
• Easy and efficient installation with a No. 3 Phillips drive, reducing tool slippage and assembly time
• Reliable thread engagement with a 1-1/2" minimum thread length and coarse UNC threading for quick assembly in various materials
• Precision manufacturing with Class 2A thread fit ensuring consistent performance and interchangeability
• Global compliance assurance meeting ASME B18.6.3 standards and being RoHS 3 & REACH compliant for safe, regulated use

Professional Applications & Engineering Value

This 1/4-20 UNC brass flat head screw is engineered to address critical challenges in industrial assembly and maintenance. The brass material provides excellent resistance to corrosion and galvanic reactions, making it ideal for marine, plumbing, and electrical applications where moisture and chemicals are present. The partially threaded design with a substantial 1-1/2" minimum thread length ensures maximum grip in softer materials or pre-tapped holes, reducing the risk of stripping. Combined with a coarse thread spacing and Phillips drive, these screws enable faster installation and higher torque application, streamlining production lines and field service. The flat head profile with an 82° countersink angle allows for a flush finish, essential for applications requiring aerodynamic surfaces or where protrusions are a safety hazard, providing both functional and aesthetic engineering value.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with a Class 2A thread fit, ensuring precise dimensional accuracy and reliable performance. It is manufactured in compliance with the ASME B18.6.3 standard, guaranteeing consistency and quality. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to stringent environmental and safety regulations for industrial components.