S-91255A842 3/8"-24 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
- Superior corrosion resistance with black-oxide coating for extended service life in harsh industrial environments
- Precision Class 3A thread fit ensures secure, vibration-resistant fastening in critical applications
- High tensile strength (120,000 psi) provides reliable performance under extreme mechanical stress
- Rockwell C39 hardness rating delivers exceptional wear resistance and durability
- 7/32" hex drive design enables quick installation and high torque application without stripping
- Fully threaded construction allows maximum grip length and uniform stress distribution
- Compliant with major industry standards including ASME B18.3 and ASTM F835 for guaranteed quality
Professional Applications & Engineering Value
These black-oxide alloy steel rounded head screws with 3/8"-24 UNF fine threading are engineered to solve critical fastening challenges in demanding industrial applications. The combination of Class 3A thread fit and fully threaded design provides superior vibration resistance and load distribution, making them ideal for machinery, automotive assemblies, and heavy equipment where joint integrity is paramount. The rounded button head profile with hex drive offers both aesthetic appeal and practical installation advantages, while the black-oxide surface treatment significantly enhances corrosion protection without compromising dimensional accuracy. These precision industrial fasteners deliver reliable performance in high-stress environments where fastener failure is not an option.
Specification Summary & Compliance
Manufactured to exacting Class 3A thread tolerances with UNF (Unified National Fine) thread form and 3/8"-24 thread size. These screws conform to ASME B18.3 and ASTM F835 manufacturing specifications, ensuring dimensional consistency and mechanical performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications requiring strict regulatory adherence.
