S-90233A405 4-40 x 3/8" ASME B18.6.3 Titanium Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from Grade 2 Titanium construction, ideal for harsh environments and extending service life
• Excellent strength-to-weight ratio for demanding applications where component weight is critical
• High tensile strength of 40,000 psi ensures reliable performance under significant load and stress
• Rockwell B80 hardness provides excellent durability and resistance to wear and deformation
• Standard 82° countersink angle and flat head allows for a flush, clean finish in assembled products
• Coarse UNC threads with Class 2A fit enable faster installation and secure holding power
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality, safety, and environmental responsibility

Professional Applications & Engineering Value

These Grade 2 Titanium flat head screws are engineered to solve critical challenges in aerospace, medical devices, and marine equipment. The 4-40 UNC coarse thread and Phillips drive provide efficient installation and high resistance to vibrational loosening. The inherent corrosion resistance of titanium eliminates the risk of degradation in saline or chemically aggressive environments, a common failure point for standard steel fasteners. Combined with a fully threaded design and Class 2A thread fit, these screws deliver consistent clamping force and reliable performance in high-strength, lightweight assemblies, reducing maintenance needs and total cost of ownership.

Specification Summary & Compliance

This product features a 4-40 UNC coarse thread with a Class 2A thread fit for standard tolerance and easy assembly. Manufacturing and dimensional compliance is guaranteed per the ASME B18.6.3 specification. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they are free of restricted hazardous substances and safe for use in various international markets.