S-91255A632 3/8"-16 x 2" 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 corrosion resistance with black-oxide finish, extending service life in demanding industrial environments
- Superior thread engagement with Class 3A UNC coarse threads ensuring reliable fastening in high-vibration applications
- High-torque installation capability through 7/32" hex drive design for secure assembly without stripping
- Maximum load-bearing capacity with 120,000 psi tensile strength and Rockwell C39 hardness for heavy-duty applications
- Full-threaded design providing consistent clamping force along the entire 2" length
- Rounded button head profile offering reduced surface protrusion while maintaining structural integrity
- Regulatory compliance assurance meeting ASME B18.3, ASTM F835, RoHS 3 and REACH standards
Professional Applications & Engineering Value
These black-oxide alloy steel rounded head hex screws deliver critical performance advantages in industrial assembly where vibration resistance and structural integrity are paramount. The Class 3A UNC coarse thread configuration prevents loosening under dynamic loads, while the fully threaded design ensures uniform stress distribution across the entire fastener length. The 7/32" hex drive accommodates high-torque installation in confined spaces, making these industrial screws ideal for heavy machinery, structural steel connections, and automotive applications where 120,000 psi tensile strength is required. The corrosion-resistant black-oxide finish provides additional protection in harsh operating environments without compromising dimensional accuracy.
Specification Summary & Compliance
Manufactured to precise Class 3A thread fit tolerances with UNC coarse threading (3/8"-16) and full compliance with ASME B18.3 and ASTM F835 specifications. These rounded head screws feature a standard head diameter of 0.656" with 2" fully threaded length. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements for industrial use, ensuring environmental regulatory adherence without compromising mechanical performance.
