S-91255A189 8-32 x 3/16" 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 durability with 120,000 psi tensile strength and Rockwell C39 hardness for reliable performance in demanding environments
- Superior corrosion resistance through black-oxide coating on alloy steel, extending service life in industrial applications
- Precise thread engagement with Class 3A UNC coarse threading ensuring secure fastening and vibration resistance
- Easy installation and removal with hex drive compatibility and rounded button head design for accessible tool access
- Full thread coverage along the 3/16" length provides maximum grip and load distribution across connected components
- Regulatory compliance with RoHS 3 and REACH standards, making them suitable for global industrial supply chains
- Standardized dimensions meeting ASME B18.3 and ASTM F835 specifications for consistent performance and interchangeability
Professional Applications & Engineering Value
These black-oxide alloy steel rounded head screws with 8-32 UNC coarse threading deliver critical engineering advantages in industrial settings. The combination of 120,000 psi tensile strength and Class 3A thread fit addresses common failure points in vibration-prone applications, maintaining joint integrity under dynamic loads. The fully threaded design ensures maximum engagement depth, while the hex drive compatibility with 3/32" drive size facilitates efficient installation in confined spaces. The black-oxide surface treatment provides essential corrosion protection without compromising dimensional accuracy, making these button head screws ideal for machinery, equipment assembly, and precision manufacturing where reliability and compliance with international standards are paramount.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit and UNC coarse threading specifications. Complies with ASME B18.3 and ASTM F835 manufacturing standards, ensuring consistent quality and performance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements for use in regulated industries worldwide.
