S-90941A111 4-40 x 1/4" ASME B18.3 Titanium Button Head Hex-Drive Screws
Titanium Button Head Hex-Drive 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
- Exceptional strength-to-weight ratio from Grade 5 Titanium construction, providing high load capacity without adding bulk
- Superior corrosion resistance for extended service life in harsh industrial environments and chemical exposure
- Reliable fastening performance with 130,000 psi tensile strength and Rockwell C36 hardness for high-stress applications
- Easy installation and removal with hex drive design requiring only 1/16" drive tool
- Precise thread engagement through UNC coarse threading and Class 2A fit for secure connections
- Streamlined assembly process with fully threaded design and rounded button head profile
- Compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
These Grade 5 Titanium rounded head screws deliver critical performance advantages in demanding applications where weight reduction, corrosion resistance, and high strength are paramount. The 4-40 UNC coarse thread configuration ensures rapid installation and reliable holding power in materials prone to stripping, while the hex drive provides superior torque transmission compared to other drive types. The fully threaded design maximizes engagement depth, making these titanium fasteners ideal for aerospace components, medical devices, marine equipment, and high-performance automotive assemblies where failure is not an option. The combination of 130,000 psi tensile strength and Rockwell C36 hardness ensures these screws maintain integrity under vibration, thermal cycling, and sustained loads.
Specification Summary & Compliance
These rounded head screws feature precise Class 2A thread fit with 4-40 UNC coarse threads and right-hand direction. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance compliance for global industrial applications.
