S-90600A138 3/8"-16 x 1" ASME B18.3 Stainless Steel Button Head Torx Screws
Stainless Steel Button Head Torx 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
- Superior corrosion resistance through 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Enhanced torque transmission and tool longevity with precision T45 Torx drive that minimizes cam-out and stripping
- Reliable high-strength performance with 60,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Precise thread engagement and vibration resistance through Class 3A UNC coarse threading with full threading along the 1" length
- Streamlined assembly and reduced head protrusion with rounded button head profile requiring minimal clearance
- Guaranteed dimensional consistency through compliance with ASME B18.3 manufacturing standards
- Environmental regulation compliance meeting RoHS 3 and REACH requirements for global industrial use
Professional Applications & Engineering Value
These 18-8 stainless steel rounded head screws deliver critical engineering solutions where corrosion resistance, precision fit, and high torque requirements intersect. The T45 Torx drive system prevents tool slippage during high-torque assembly in confined spaces, while the passivated finish creates an additional protective layer against chemical exposure and oxidation. With Class 3A UNC coarse threads maintaining tight tolerances, these fully threaded fasteners provide superior vibration resistance in machinery, automotive assemblies, and structural applications. The combination of 60,000 psi tensile strength and Rockwell B55 hardness ensures reliable performance under dynamic loads, making them ideal for permanent installations requiring long-term reliability in challenging industrial environments.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit ensuring precise dimensional accuracy. Features 3/8"-16 UNC coarse threads in right-hand direction with full threading along the 1" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.
