S-91255A145 6-32 x 5/16" ASME B18.3 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 corrosion resistance with black-oxide coating for reliable performance in demanding industrial environments.
- Superior torque transfer and strip resistance thanks to the 5/64" hex drive design, ensuring secure installation.
- High tensile strength of 120,000 psi provides dependable load-bearing capacity for critical applications.
- Precision Class 3A thread fit ensures smooth assembly and vibration resistance in coarse-threaded UNC fastening.
- Enhanced durability from Rockwell C39 hardness, reducing wear and extending service life.
- Full threading for maximum grip along the entire 5/16" length, offering versatile fastening depth.
- Compliance with major industry standards including ASME B18.3 and ASTM F835, guaranteeing quality and safety.
Professional Applications & Engineering Value
Engineered for industrial applications where reliability is non-negotiable, this black-oxide alloy steel screw combines high tensile strength and corrosion resistance to prevent failure in high-stress environments. The 6-32 UNC coarse threading and Class 3A thread fit facilitate quick assembly while maintaining tight tolerances, reducing the risk of loosening under vibration. Its rounded button head and hex drive design allow for flush mounting and efficient torque application, making it ideal for machinery, automotive, and electronics assembly. This screw addresses common pain points like stripping, corrosion, and installation inefficiency, providing a robust fastening solution that meets rigorous engineering demands.
Specification Summary & Compliance
This screw adheres to precise dimensional standards with a Class 3A thread fit and UNC coarse thread spacing, ensuring consistent performance. Manufacturing and material specifications comply with ASME B18.3 and ASTM F835 for reliability. Additionally, it is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for global use.
