S-91257A694 7/16"-14 x 7 1/2" 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 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
• Optimized torque transmission through the external hex drive design for secure installation and removal
• Enhanced durability with Rockwell C33 hardness rating, maintaining structural integrity under repeated stress
• Precise thread engagement with Class 2A thread fit ensuring consistent fastening performance
• Versatile partial threading allowing for both clamping and alignment functions in assembly applications
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed quality and interchangeability

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers exceptional engineering value for heavy machinery, structural steel connections, and industrial equipment assembly. The 7/16"-14 UNC coarse thread design provides excellent engagement in various materials while resisting vibration-induced loosening. The zinc yellow-chromate plating creates a protective barrier against corrosive elements in outdoor or chemical-exposed environments. With partial threading, this fastener offers precise clamping force control while the external hex drive ensures reliable torque application during installation. Engineered to withstand extreme mechanical stress, this industrial-grade screw solves critical fastening challenges in construction, automotive, and manufacturing sectors where failure is not an option.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance according to UNC standards, ensuring precise dimensional accuracy. Manufactured to comply with ASME B18.2.1 and SAE J429 Grade 8 specifications, it guarantees consistent performance and interchangeability. The inch system measurement provides compatibility with North American industrial standards, while the zinc yellow-chromate plating meets industry corrosion protection requirements. This 7/16"-14 UNC coarse thread screw delivers reliable performance across demanding applications with its certified 150,000 psi tensile strength and Rockwell C33 hardness ratings.