S-91255A169 8-32 x 1 3/4" 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 corrosion resistance with black-oxide coating, ideal for demanding industrial environments
- Superior holding power from 120,000 psi tensile strength and Rockwell C39 hardness alloy steel construction
- Precise, reliable fastening ensured by Class 3A thread fit and UNC coarse threading for reduced cross-threading
- Full-length threading provides maximum grip and load distribution across the entire screw length
- Easy installation and removal with 3/32" hex drive and rounded button head design
- Compliance with major industry standards including ASME B18.3 and ASTM F835 for guaranteed performance
- Environmentally responsible manufacturing meeting RoHS 3 and REACH compliance requirements
Professional Applications & Engineering Value
These 8-32 UNC Class 3A rounded head screws deliver critical performance advantages in industrial assembly applications where vibration resistance and long-term reliability are paramount. The black-oxide alloy steel construction provides excellent corrosion protection while maintaining the 120,000 psi tensile strength needed for heavy-duty fastening. The combination of fully threaded design and coarse UNC threading ensures rapid installation and superior resistance to loosening under dynamic loads. The rounded button head profile with 3/32" hex drive offers clean aesthetics and secure tool engagement, making these screws ideal for machinery, equipment manufacturing, and structural applications where both performance and appearance matter.
Specification Summary & Compliance
This 1 3/4" length screw features precision Class 3A thread fit with UNC coarse threading (8-32 size) and right-hand thread direction. Manufacturing and quality control adhere to ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial use.
