S-93734A120 1/2"-13 x 1 1/2" Tension-Indicating Hex Head Screws

Key Features & Benefits at a Glance

• Precise tension monitoring with clear visual indication at 10,000 lbs load, ensuring accurate assembly and preventing under/over-tightening in critical applications
• Exceptional strength and reliability with Grade 8 classification and 150,000 psi tensile strength, suitable for high-stress industrial environments
• Superior corrosion resistance from zinc yellow-chromate plated steel, extending service life in harsh conditions
• Optimized thread engagement with UNC coarse threads and Class 2A fit, providing faster installation and reduced cross-threading risk
• Wide temperature tolerance from 0° to 165°F, maintaining performance across various operating environments
• Easy installation and removal with external hex drive and 3/4" head width, compatible with standard tools
• Full thread coverage along the 1½" length, ensuring maximum grip and load distribution

Professional Applications & Engineering Value

This Grade 8 tension indicating hex head screw addresses critical challenges in heavy machinery, structural steel connections, and industrial equipment assembly where precise bolt tension is paramount. The zinc yellow-chromate plated steel construction delivers enhanced corrosion protection in demanding environments, while the Rockwell C33 hardness ensures maintained thread integrity under repeated loading. The UNC coarse thread design with Class 2A fit facilitates quicker installation in field applications without sacrificing precision. The integrated tension indicating feature provides visual confirmation of proper preload, eliminating guesswork in critical bolted joints and reducing the risk of structural failures in construction, manufacturing, and infrastructure projects.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC thread form (1/2"-13). The fastener meets Grade 8 strength requirements with 150,000 psi tensile strength and Rockwell C33 hardness. Compliant with REACH regulations (EC 1907/2006) for industrial use, ensuring environmental and safety standards are maintained.