S-91253A890 7/8"-9 x 2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head 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 load-bearing capacity with 130,000 psi tensile strength for heavy-duty applications requiring maximum reliability
- Precise thread engagement through Class 3A thread fit ensuring superior vibration resistance and secure fastening
- Enhanced corrosion protection from black-oxide coating providing durable surface resistance in demanding industrial environments
- Optimized drive efficiency with 9/16" hex drive enabling high-torque installation without stripping or cam-out
- Consistent flush mounting thanks to standard 82° countersink angle and flat head design for seamless surface integration
- Superior material integrity from alloy steel with Rockwell C37 hardness maintaining structural stability under extreme conditions
- Full-thread engagement capability allowing maximum grip length and distribution of clamping force
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these black-oxide alloy steel flat head socket cap screws deliver critical performance where high tensile strength and vibration resistance are paramount. The Class 3A thread fit with UNC coarse threading ensures rapid assembly while maintaining precise tolerances in machinery, structural steel connections, and heavy equipment manufacturing. The 82° countersink angle provides flush mounting solutions for applications requiring smooth surface profiles, while the fully threaded design maximizes load distribution across the entire fastener length. The 9/16" hex drive accommodates high-torque installation tools, making these socket cap screws ideal for maintenance, repair, and OEM applications demanding reliable, long-lasting fastening solutions.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC 7/8"-9 coarse thread specifications. Complies with ASTM F835 manufacturing standards for socket cap screws, ensuring consistent quality and performance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements for environmental safety and regulatory adherence in industrial applications worldwide.
