S-91255A244 10-24 x 5/8" 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
- Superior corrosion resistance from black-oxide coating, extending service life in harsh industrial environments
- Exceptional tensile strength of 120,000 psi ensures reliable performance under heavy loads and vibration
- Precision Class 3A thread fit provides consistent engagement and reduces cross-threading risks
- Enhanced durability with Rockwell C39 hardness for repeated use without deformation
- Optimized hex drive design (1/8") allows for secure tool engagement and efficient installation
- Full threading along the 5/8" length ensures maximum grip and load distribution
- Compliance with major standards including ASME B18.3 and ASTM F835 for guaranteed quality and interoperability
Professional Applications & Engineering Value
These black-oxide alloy steel rounded head hex screws deliver critical performance in demanding applications where corrosion resistance and mechanical strength are paramount. The 10-24 UNC coarse thread configuration combined with Class 3A precision fit ensures rapid assembly and vibration resistance in machinery, automotive, and heavy equipment. The fully threaded design maximizes surface contact for superior clamping force distribution, while the rounded button head provides a finished appearance and reduces snagging hazards. Engineered to withstand extreme conditions, these screws prevent galvanic corrosion and maintain integrity in environments exposed to moisture, chemicals, and temperature variations, making them ideal for industrial fastening solutions requiring long-term reliability.
Specification Summary & Compliance
This screw features Class 3A thread fit per UNC standards with coarse thread spacing, ensuring precise dimensional accuracy. Manufacturing complies with ASME B18.3 and ASTM F835 specifications for consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for hazardous substances.
