S-90233A400 4-40 x 1/4" ASME B18.6.3 Titanium Phillips Flat Head Screws
Titanium 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
- Exceptional corrosion resistance from Grade 2 Titanium construction, ideal for harsh environments and extending service life
- High strength-to-weight ratio providing 40,000 psi tensile strength for reliable performance in demanding applications
- Superior durability with Rockwell B80 hardness, ensuring excellent wear resistance and reduced fastener failure
- Precise installation and flush fit with a standard 82° countersink angle and flat head design for seamless surfaces
- Wide compatibility and easy driving thanks to the Phillips No. 1 drive and coarse UNC threading for quick assembly
- Consistent thread engagement with Class 2A thread fit and full threading, minimizing loosening under vibration
- Global regulatory compliance meeting RoHS 3 and REACH standards for safe use in international markets
Professional Applications & Engineering Value
These 4-40 UNC Grade 2 Titanium Flat Head Phillips Screws are engineered to solve critical challenges in industrial applications where weight, corrosion, and strength are paramount. The Grade 2 Titanium material offers outstanding resistance to oxidation and chemicals, making these flat head screws ideal for aerospace, marine, and medical equipment. The coarse thread design ensures rapid installation and secure holding power in softer materials or where vibration is a concern. With a fully threaded shank and standard 82° countersink, they provide a flush finish that prevents snagging and maintains aerodynamic or aesthetic surfaces. This combination of high tensile strength and lightweight properties delivers long-term reliability, reducing maintenance cycles and total cost of ownership in precision assemblies.
Specification Summary & Compliance
This screw features a 4-40 UNC coarse thread with Class 2A thread fit for standard tolerance and ease of assembly. It is manufactured to meet ASME B18.6.3 specifications, ensuring dimensional accuracy and performance consistency. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms adherence to environmental and safety regulations, supporting use in global supply chains.
