S-91255A096 3-48 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
- Exceptional tensile strength of 120,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Superior thread fit with Class 3A tolerance provides precise engagement and vibration resistance, minimizing loosening in dynamic applications.
- Black-oxide finish on alloy steel offers enhanced corrosion resistance and a durable, non-reflective surface suitable for various environments.
- Fully threaded design with coarse UNC threads allows for faster installation and strong holding power in a wide range of materials.
- Hex drive (1/16") and rounded button head enable easy installation with standard tools and a low-profile, aesthetically pleasing finish.
- High hardness (Rockwell C39) increases wear resistance, extending the screw's service life in repetitive or abrasive applications.
- Compliance with ASME B18.3 and ASTM F835 ensures consistent quality and interoperability in professional assemblies.
Professional Applications & Engineering Value
These 3-48 UNC rounded head hex drive screws are engineered to address common industrial challenges such as vibration-induced loosening and corrosion. The black-oxide alloy steel construction provides a robust barrier against environmental factors, while the Class 3A thread fit ensures tight, secure fastening in precision equipment, electronics, and machinery. The coarse thread design is ideal for softer materials or applications requiring quick assembly, and the fully threaded body distributes load evenly, enhancing joint integrity. Suitable for industrial screws applications in automotive, aerospace, and manufacturing, these screws deliver reliable performance where durability and compliance are critical.
Specification Summary & Compliance
This screw features a 3-48 UNC coarse thread with Class 3A fit for high precision, manufactured to ASME B18.3 and ASTM F835 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global industrial use.
