S-92327A815 5/16"-18 x 3/4" ASME B18.2.1, SAE J429 Square Head Screws
Square Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength of 120,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh industrial environments.
- Precise Class 3A thread fit provides consistent engagement and vibration resistance, minimizing loosening over time.
- SAE Grade 5 medium-strength rating with Rockwell C25 hardness offers a balance of durability and machinability for various projects.
- Coarse UNC threading enables quick installation and removal, saving time in assembly and maintenance tasks.
- External square drive design allows for high-torque application with standard tools, enhancing installation efficiency.
- Full threading along the 3/4" length ensures maximum grip and adjustability in diverse material thicknesses.
Professional Applications & Engineering Value
This 5/16"-18 UNC square head screw is engineered to address common industrial challenges, such as vibration-induced loosening and environmental corrosion. Made from high-quality steel and finished with zinc yellow-chromate plating, it provides robust protection against rust and wear in machinery, construction, and automotive assemblies. The coarse thread and Class 3A fit ensure secure fastening in materials where fine threads might strip, while the external square drive facilitates easy installation with common wrenches. Ideal for heavy-duty applications requiring medium-strength fasteners, this screw delivers consistent performance under stress, reducing maintenance needs and downtime.
Specification Summary & Compliance
This screw adheres to precise dimensional standards with a Unified Standard Class 3A thread fit and UNC coarse threading. It complies with ASME B18.2.1 and SAE J429 specifications, ensuring interoperability and reliability. The product meets common industry regulations for quality and safety, supporting consistent performance in engineered systems.
