S-96452A585 5/16"-18 x 1" ASME B18.3, ASTM F835 Steel Button Head Torx Plus Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating that protects against rust in demanding industrial environments
• Maximum torque transfer and reduced cam-out through Torx Plus IP40 drive system for secure fastening and extended tool life
• Exceptional mechanical strength with 120,000 psi tensile strength and Rockwell C39 hardness for heavy-duty applications
• Precise thread engagement with Class 3A UNC coarse threads ensuring reliable performance in high-vibration settings
• Enhanced durability from fully threaded alloy steel construction that maintains integrity under extreme loads
• Streamlined installation with rounded button head design that provides a low-profile finish while preventing snagging
• Regulatory compliance assurance meeting major industrial standards for quality and environmental safety

Professional Applications & Engineering Value

These black-oxide alloy steel rounded head screws deliver critical performance advantages in industrial assembly where vibration resistance and corrosion protection are paramount. The Torx Plus IP40 drive system eliminates cam-out issues common in hex drives, ensuring maximum torque application in automated production environments. With Class 3A UNC coarse threads, these fasteners provide superior engagement in soft materials and high-vibration machinery while the fully threaded design maintains consistent clamping force across the entire length. The black-oxide surface treatment creates a durable barrier against moisture and chemicals, extending service life in manufacturing equipment, heavy machinery, and outdoor applications where environmental factors would compromise standard fasteners.

Specification Summary & Compliance

Manufactured to exacting Class 3A thread fit tolerances with UNC 5/16"-18 coarse threads and right-hand threading orientation. Complies with ASME B18.3 specifications and ASTM F835 manufacturing standards. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements for hazardous substances. The Rockwell C39 hardness rating and 120,000 psi tensile strength validate the fastener's mechanical performance for critical applications.