S-90201A369 7/16"-14 x 4" Extreme-Strength Grade 9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 180,000 psi tensile strength for critical structural applications
• Superior wear and deformation resistance thanks to Rockwell C38 hardness and Grade 9 classification
• Reliable corrosion protection provided by zinc yellow-chromate plating in harsh environments
• Easy installation and high torque transfer with external hex drive and 5/8" head width
• Secure fastening in coarse materials enabled by 7/16"-14 UNC coarse threading with Class 2A precision fit
• Optimized weight and material efficiency through partial threading design on 4" length
• Compliance with international environmental standards including RoHS 3 and REACH regulations

Professional Applications & Engineering Value

These Grade 9 hex head screws deliver critical performance where failure is not an option. The steel construction combined with zinc yellow-chromate plating creates a durable barrier against corrosion in industrial settings, while the 7/16"-14 UNC coarse thread provides superior grip in soft materials and faster installation. The external hex drive allows for high torque application without stripping, making them ideal for heavy machinery, structural steel connections, and equipment manufacturing. With partial threading, these fasteners optimize clamping force distribution while reducing weight, solving vibration-induced loosening problems in dynamic load applications.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit standards with UNC coarse threading (7/16"-14) and inch system measurements. These Grade 9 fasteners meet rigorous industrial specifications including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, ensuring environmental responsibility while maintaining exceptional mechanical properties with 180,000 psi tensile strength and Rockwell C38 hardness.