S-91255A812 8-32 x 3" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating for reliable performance in harsh industrial environments
• High tensile strength of 120,000 psi ensures secure fastening in demanding applications
• Precise Class 3A thread fit guarantees superior engagement and vibration resistance
• Rockwell C39 hardness rating provides excellent durability and wear resistance
• 3/32" hex drive design enables efficient installation with standard tools
• Partially threaded configuration allows for optimal clamping force distribution
• Full regulatory compliance with ASME B18.3, ASTM F835, RoHS 3, and REACH standards

Professional Applications & Engineering Value

Engineered for industrial assembly applications requiring reliable fastening solutions, these 8-32 UNC coarse thread screws deliver exceptional performance in machinery, equipment manufacturing, and structural assemblies. The black-oxide alloy steel construction provides superior corrosion protection while maintaining high tensile strength for heavy-duty applications. The rounded button head design with hex drive ensures easy installation and removal, reducing assembly time and labor costs. The partially threaded configuration prevents over-tightening and distributes clamping force evenly, making these industrial screws ideal for applications where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit and UNC coarse threading for superior engagement. These 3-inch rounded head screws comply with ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications requiring strict regulatory adherence.