S-92327A119 3/4"-10 x 3 1/2" ASME B18.2.1, SAE J429 Square Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with 120,000 PSI rating ensures reliable performance in demanding industrial applications
• Superior corrosion resistance provided by zinc yellow-chromate plating for extended service life in harsh environments
• Optimized torque transmission through external square drive design for secure installation and removal
• Enhanced thread engagement with UNC coarse threading that resists loosening under vibration and load
• Precision manufacturing to Unified Standard Class 3A thread fit for consistent quality and reliable fastening
• Medium strength classification as SAE Grade 5 with Rockwell C25 hardness for balanced strength and durability
• Versatile partial threading design allows for both clamping and clearance functions in various assembly applications

Professional Applications & Engineering Value

This 3/4"-10 SAE Grade 5 Square Head Screw delivers critical engineering solutions for industrial applications requiring medium strength fasteners with reliable performance. The steel construction combined with zinc yellow-chromate plating provides exceptional corrosion protection, making it ideal for machinery, structural assemblies, and equipment exposed to challenging environmental conditions. The UNC coarse threading ensures quick assembly and superior resistance to vibration loosening, while the external square drive offers positive torque transmission for secure installations. The partially threaded design allows for precise clamping force distribution, making these square head screws particularly valuable in construction, manufacturing, and heavy equipment applications where vibration resistance and reliable fastening are paramount.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Unified Standard Class 3A thread fit and UNC coarse threading (3/4"-10 thread size). The fastener complies with ASME B18.2.1 and SAE J429 specifications, ensuring consistent quality and performance. Features include a 1 1/8" head width, 1/2" head height, and 3 1/2" overall length with minimum thread length of 1 3/4". The SAE Grade 5 classification guarantees mechanical properties including 120,000 PSI tensile strength and Rockwell C25 hardness, meeting industry standards for medium-strength industrial fastening applications.