S-94967A694 5/16"-18 x 1 3/4" ASME B18.2.1, ASTM B117, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion protection with black corrosion-resistant coating for extended service life in harsh environments
• Exceptional load-bearing capability with Grade 5 classification and 120,000 psi tensile strength for heavy-duty applications
• Reliable thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized installation efficiency through external hex drive design providing superior torque transmission
• Full-threaded design offering maximum grip length and uniform stress distribution across the entire fastener
• Enhanced durability with Rockwell C25 hardness balancing strength and ductility for demanding applications
• Regulatory compliance assurance meeting RoHS 3 and REACH environmental standards for global industrial use

Professional Applications & Engineering Value

These Grade 5 hex head screws deliver critical performance in industrial fastening applications where corrosion resistance and structural integrity are paramount. The black corrosion-resistant coated steel construction provides essential protection against environmental degradation, significantly extending service life in outdoor or chemically aggressive settings. The 5/16"-18 UNC coarse thread configuration ensures rapid installation and superior resistance to vibrational loosening, while the external hex drive facilitates high-torque applications with standard tools. Engineered to meet ASME B18.2.1, ASTM B117, and SAE J429 specifications, these fully threaded fasteners provide reliable performance in machinery assembly, structural frameworks, and heavy equipment manufacturing where 120,000 psi tensile strength and consistent clamping force are essential for operational safety and longevity.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance. Complies with ASME B18.2.1 dimensional specifications, ASTM B117 salt spray testing requirements, and SAE J429 mechanical properties for Grade 5 fasteners. Meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations for chemical safety. The UNC coarse thread pattern with right-hand direction follows standardized threading specifications for compatibility with industry-standard components.