S-94239A113 3/8"-16 x 7/8" SAE J429 High-Strength Grade 8 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with 150,000 PSI tensile strength for heavy-duty applications requiring superior structural integrity
• Enhanced corrosion resistance through zinc-plated steel construction, extending service life in demanding industrial environments
• Superior torque transmission via external hex drive design, allowing for high-tightening forces without stripping
• Reliable vibration resistance with serrated locking flange that prevents loosening under dynamic loads
• Precision thread engagement with UNC coarse threads and Class 2A fit for quick assembly and consistent performance
• Full-length threading provides maximum grip along the entire shank for secure fastening in various material thicknesses
• Industry-standard compliance ensures interchangeability and meets rigorous quality requirements for industrial applications

Professional Applications & Engineering Value

Engineered for heavy machinery, structural steel connections, and industrial equipment assembly, this Grade 8 hex head screw delivers exceptional performance where failure is not an option. The zinc-plated steel construction provides critical corrosion protection in manufacturing facilities, outdoor applications, and high-humidity environments. The combination of external hex drive and serrated flange addresses common vibration-induced loosening issues in dynamic systems, while the fully threaded UNC coarse thread design ensures rapid installation and superior holding power in both soft and hard materials. These industrial fasteners maintain integrity under extreme stress conditions, making them ideal for critical joints in construction, automotive, and heavy equipment applications where reliability and safety are paramount.

Specification Summary & Compliance

This 3/8"-16 UNC hex head screw features Class 2A thread fit for standard industrial applications and is manufactured to meet IFI 111 and SAE J429 specifications. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) for restricted substance control and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. With precise dimensional tolerances maintained throughout production, these screws deliver consistent performance and interchangeability across industrial applications requiring Grade 8 strength classification and coarse thread fastening solutions.