S-91255A635 3/8"-16 x 2 1/2" ASTM F835 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional corrosion resistance with black-oxide coating for extended service life in demanding environments
- Superior tensile strength rated at 120,000 psi ensures reliable performance under heavy loads
- Precision Class 3A thread fit provides secure fastening with minimal vibration loosening
- Full threading design offers maximum engagement and holding power across the entire fastener length
- Hex drive compatibility with 7/32" tools enables efficient installation and removal
- Rounded button head profile reduces surface protrusion while maintaining high torque capability
- Comprehensive regulatory compliance ensures suitability for global industrial applications
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these black-oxide alloy steel rounded head hex screws deliver exceptional performance in machinery assembly, structural frameworks, and equipment manufacturing. The Class 3A UNC coarse thread provides superior engagement in both metals and high-density materials, while the fully threaded design ensures maximum clamping force distribution. The black-oxide surface treatment significantly enhances corrosion resistance, making these high tensile strength screws ideal for environments where moisture and chemical exposure are concerns. The combination of Rockwell C39 hardness and precise hex drive compatibility allows for repeated installation cycles without stripping or deformation, reducing maintenance costs and downtime in production facilities.
Specification Summary & Compliance
This 3/8"-16 UNC coarse thread fastener features Class 3A thread fit precision and 2-1/2" length with complete threading. Manufactured to ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and performance reliability. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these screws suitable for international industrial markets and regulated applications requiring strict material composition controls.
