S-91286A495 3/4"-16 x 2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 8 strength rating and 150,000 PSI tensile strength for reliable performance in high-stress applications
• Superior corrosion protection through zinc-flake coating that extends service life in harsh industrial environments
• Precise thread engagement with Class 2A UNF fine threads ensuring secure fastening and vibration resistance
• Optimal torque transmission via the external hex drive and 1 1/8" head width for easy installation with standard tools
• Consistent material integrity maintained through Rockwell C33 hardness for durability against wear and deformation
• Full-threaded design providing maximum grip length and uniform stress distribution along the entire 2" length
• Regulatory compliance assurance meeting ASME, SAE, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 8 hex head screws deliver critical performance where failure is not an option. The zinc-flake coated steel construction provides exceptional corrosion resistance, making these UNF fine thread fasteners ideal for outdoor equipment, heavy machinery, and structural assemblies exposed to moisture and chemicals. The Class 2A thread fit ensures precise mating with nuts and tapped holes, eliminating play in vibration-prone environments. With 150,000 PSI tensile strength and Rockwell C33 hardness, these fully threaded screws maintain clamping force under extreme loads, preventing joint failure in critical connections. The external hex drive design allows for high torque application during installation, ensuring proper preload in heavy-duty industrial fastening applications across construction, automotive, and manufacturing sectors.

Specification Summary & Compliance

This 3/4"-16 UNF hex head screw features precision Class 2A thread fit with right-hand fine threading and full threading along the 2" length. Manufactured to ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and performance reliability. Compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility in industrial supply chains.