S-97124A142 4-40 x 3/4" ASME B18.6.3 Aluminum Phillips Flat Head Screws
Aluminum Phillips Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- High-strength aluminum construction provides excellent durability while maintaining lightweight properties ideal for weight-sensitive applications
- Precise Class 2A thread fit ensures smooth installation and reliable fastening performance in industrial assemblies
- 50,000 psi tensile strength rating delivers exceptional load-bearing capacity for demanding mechanical applications
- Rockwell B55 hardness offers superior resistance to wear and deformation during repeated use
- Standard 82° countersink angle allows for flush mounting in various materials without protruding head surfaces
- Phillips drive design enables efficient installation with common tools while reducing cam-out risks
- Full threading along the 3/4" length provides maximum grip and adjustment flexibility in assembly applications
Professional Applications & Engineering Value
These 4-40 UNC flat head Phillips screws manufactured from 2024 aluminum deliver optimal performance in weight-critical industrial applications where corrosion resistance and strength-to-weight ratio are paramount. The coarse UNC thread pattern combined with Class 2A fit ensures rapid installation and secure fastening in materials ranging from plastics to thin metals. The flat head profile with standard 82° countersink creates seamless surface finishes while the Phillips drive system provides familiar, efficient installation for assembly line operations. These screws are particularly valuable in aerospace components, electronic enclosures, and precision instruments where aluminum fasteners must maintain structural integrity without adding unnecessary weight.
Specification Summary & Compliance
These flat head screws feature precise 4-40 UNC coarse threads with Class 2A tolerance for consistent fit and performance. Manufacturing complies with ASME B18.6.3 specifications ensuring dimensional accuracy and mechanical properties. The screws are fully RoHS 3 (2015/863/EU) compliant and meet REACH (EC 1907/2006) regulations regarding substance restrictions, making them suitable for global industrial applications with strict environmental requirements.
