S-91255A837 8-36 x 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 finish, extending service life in demanding industrial environments
- Precise Class 3A thread fit ensures reliable, vibration-resistant connections in critical applications
- High tensile strength (120,000 psi) provides exceptional load-bearing capacity for heavy-duty assemblies
- Rockwell C39 hardness rating maintains thread integrity and prevents stripping during repeated installations
- Fine thread spacing design offers improved adjustment precision and superior clamping force distribution
- 3/32" hex drive compatibility enables quick installation and removal with standard industrial tools
- Fully threaded construction maximizes engagement surface for enhanced mechanical stability
Professional Applications & Engineering Value
These 8-36 UNF Class 3A Black-Oxide Alloy Steel Rounded Head Screws address critical engineering challenges in precision manufacturing and heavy machinery. The fine thread spacing combined with Class 3A thread fit provides exceptional vibration resistance in dynamic load applications, preventing costly loosening in automotive assemblies, aerospace components, and industrial equipment. The Black-Oxide surface treatment creates a durable protective barrier against corrosion and wear, while the rounded button head profile offers a low-profile installation that clears tight spaces without compromising structural integrity. Engineered to maintain performance under extreme stress conditions, these screws deliver reliable fastening solutions where precision tolerances and long-term durability are paramount.
Specification Summary & Compliance
Manufactured to exacting Class 3A thread tolerances with UNF fine thread form and 3/4" length precision. Fully compliant with ASME B18.3 and ASTM F835 manufacturing specifications. Meets environmental standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring safe use across global industrial markets.
