S-90600A136 5/16"-18 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 with 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments
- Enhanced torque transmission and strip resistance through T40 Torx drive for secure, high-torque fastening
- Reliable, vibration-resistant assemblies ensured by Class 3A thread fit for precise, tight connections
- High mechanical durability with 60,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Smooth, low-profile installation thanks to the rounded button head design and fully threaded shank
- Industry-standard compatibility with UNC coarse threading and right-hand direction for versatile use
- Regulatory peace of mind with full compliance to ASME B18.3, RoHS 3, and REACH standards
Professional Applications & Engineering Value
Engineered for precision and longevity, these 5/16"-18 x 1" T40 Torx button head screws in 18-8 Stainless Steel address critical industrial challenges. The passivated finish significantly enhances corrosion resistance, making them suitable for outdoor, marine, or chemically exposed settings where material degradation is a concern. The T40 Torx drive minimizes cam-out risks, allowing higher torque application without damaging the fastener—essential for automated assembly lines or maintenance tasks requiring repeatability. Combined with Class 3A thread fit and coarse UNC threading, these screws provide secure, vibration-resistant joints in machinery, enclosures, and structural frames, reducing downtime and maintenance costs. Their fully threaded design ensures consistent clamping force, ideal for high-stress industrial applications demanding reliability and compliance with ASME B18.3 specifications.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC coarse thread with Class 3A fit for high precision and strength. Dimensions include a 1" length, 0.547" head diameter, and T40 Torx drive size. Manufactured from 18-8 Stainless Steel with passivated finish, it meets ASME B18.3 standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety adherence for global industrial use.
