S-97124A645 1/4"-20 x 1" ASME B18.6.3 Aluminum Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior strength-to-weight ratio from 2024 aluminum construction, offering excellent durability while reducing component weight
• Reliable fastening performance with 50,000 psi tensile strength and Rockwell B55 hardness for demanding industrial applications
• Easy installation and removal through No. 3 Phillips drive design, providing secure tool engagement during assembly
• Optimized thread engagement with UNC coarse threading and Class 2A fit, ensuring consistent performance in various materials
• Flush mounting capability with standard 82° countersink angle flat head design for clean, streamlined surface finishes
• Full regulatory compliance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
• Versatile 1" length with full threading for secure fastening across a wide range of material thicknesses

Professional Applications & Engineering Value

This 2024 aluminum flat head Phillips machine screw delivers exceptional value in applications where weight reduction and corrosion resistance are critical. The UNC coarse threading with Class 2A fit provides reliable engagement in softer materials and plastics where fine threads might strip, while the 82° countersink angle ensures flush mounting for aerodynamic and aesthetic applications. With 50,000 psi tensile strength and Rockwell B55 hardness, this fastener maintains structural integrity in vibration-prone environments common in aerospace components, electronic enclosures, and transportation equipment. The fully threaded 1" length offers maximum grip range, making it ideal for assemblies requiring adjustable clamping force.

Specification Summary & Compliance

This 1/4"-20 flat head screw features precision UNC coarse threads with Class 2A dimensional tolerance for consistent fit and performance. Manufactured to ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. The standard 82° countersink angle ensures proper seating in corresponding countersunk holes for secure, flush installations.