S-91255A615 3/8"-16 x 1 3/8" ASTM F835 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive 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 tensile strength of 120,000 psi ensures reliable performance in high-stress industrial applications
- Superior corrosion resistance from black-oxide coating extends service life in demanding environments
- Precise Class 3A thread fit provides secure fastening with minimal risk of cross-threading or loosening
- Heavy-duty alloy steel construction with Rockwell C39 hardness maintains structural integrity under repeated loads
- Optimized hex drive design (7/32") enables efficient installation and removal with standard tools
- Full threading coverage ensures maximum grip strength across the entire 1-3/8" length
- Comprehensive compliance with ASME B18.3, ASTM F835, RoHS 3, and REACH standards guarantees quality and safety
Professional Applications & Engineering Value
These 3/8"-16 UNC rounded head screws deliver critical engineering advantages for industrial assembly applications where vibration resistance and structural integrity are paramount. The black-oxide alloy steel construction provides superior corrosion protection while maintaining the 120,000 psi tensile strength required for heavy machinery, equipment frames, and structural supports. The coarse thread design with Class 3A fit ensures rapid installation in various materials while preventing loosening under dynamic loads. The button head profile with hex drive offers a low-profile solution that withstands high torque applications without stripping, making these fully threaded screws ideal for automotive, manufacturing, and construction applications requiring dependable, long-lasting fastening solutions.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit and UNC coarse threading (3/8"-16). Complies with ASME B18.3 and ASTM F835 specifications for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. Features fully threaded design with 1-3/8" length and 0.656" head diameter for consistent performance across industrial applications.
