S-91255A075 2-56 x 1/16" 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 and reduced light reflection with the black-oxide finish, ideal for industrial environments.
- Exceptional durability and high-load capacity thanks to alloy steel construction with 120,000 psi tensile strength and Rockwell C39 hardness.
- Precise, reliable fastening with minimal risk of stripping due to the Class 3A thread fit and coarse UNC threading for quick assembly.
- Easy installation and removal with the 0.050" hex drive, providing secure tool engagement in tight spaces.
- Consistent performance in demanding applications with fully threaded design ensuring maximum grip along the entire length.
- Compliance with rigorous industry standards including ASME B18.3 and ASTM F835, ensuring quality and interchangeability.
- Environmentally safe and regulatory compliant by meeting RoHS 3 and REACH standards, supporting sustainable procurement.
Professional Applications & Engineering Value
Engineered for precision and reliability, these 2-56 UNC rounded head hex drive screws address common industrial challenges such as vibration loosening and corrosion in machinery, electronics, and automotive assemblies. The black-oxide alloy steel provides a protective layer that minimizes wear and extends service life, while the Class 3A coarse thread spacing ensures rapid installation without sacrificing strength. With a fully threaded design and right-hand thread direction, they deliver uniform clamping force in high-stress environments, reducing maintenance needs and downtime. Ideal for applications requiring high tensile strength and compliance with standards like ASME B18.3, these screws offer dependable performance in OEM and MRO settings.
Specification Summary & Compliance
This screw features precise Class 3A thread fit with UNC coarse spacing, ensuring tight tolerances for reliable fastening. Manufactured in accordance with ASME B18.3 and ASTM F835 specifications, it guarantees dimensional accuracy and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety standards for industrial use.
