S-90600A135 5/16"-18 x 3/4" 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 construction and passivated finish, ideal for harsh industrial environments
- Maximum torque transmission and reduced cam-out thanks to T40 Torx drive design for secure, efficient installations
- High tensile strength of 60,000 psi ensures reliable performance in demanding heavy-duty applications
- Precise Class 3A thread fit provides superior engagement and vibration resistance in assembled components
- Rounded button head profile offers a low-profile, finished appearance while minimizing snagging risks
- Full UNC coarse threading enables faster installation and better performance in softer materials
- Compliance with ASME B18.3 standards guarantees consistent quality and interchangeability
Professional Applications & Engineering Value
These 18-8 stainless steel rounded head screws deliver exceptional engineering value in industrial settings where corrosion resistance and mechanical reliability are critical. The passivated finish significantly enhances surface durability against chemical exposure and moisture, making them ideal for marine, chemical processing, and outdoor equipment applications. The T40 Torx drive system eliminates common installation issues like screw head stripping, ensuring maximum torque transfer during assembly of machinery, enclosures, and structural frameworks. With full UNC coarse threading and Class 3A thread fit, these fasteners provide superior holding power in metals and composites, reducing maintenance frequency and improving operational safety in heavy-duty industrial applications.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit and UNC 5/16"-18 coarse threading, these screws ensure consistent performance and interchangeability. They fully comply with ASME B18.3 specifications for dimensional accuracy and mechanical properties. Additionally, these fasteners are RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial use.
