S-92327A291 3/8"-16 x 3" ASME B18.2.1, SAE J429 Square Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi from SAE Grade 5 steel ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Superior corrosion resistance with zinc yellow-chromate plating protects against rust and environmental damage, extending service life in harsh industrial settings.
• Easy installation and removal with an external square drive head, providing a secure grip for tools and minimizing slippage during high-torque applications.
• Precise thread fit with Unified Standard Class 2A coarse UNC threads offers quick assembly and strong holding power in various materials.
• Consistent durability backed by Rockwell C25 hardness, maintaining structural integrity and resistance to wear over repeated use.
• Full threading along the 3" length allows for adjustable engagement and uniform load distribution, enhancing stability in demanding applications.
• Compliance with industry standards such as ASME B18.2.1 and SAE J429 ensures quality, reliability, and interchangeability in professional setups.

Professional Applications & Engineering Value

This 3/8"-16 UNC Square Head Screw is engineered to address common industrial challenges, such as vibration loosening and corrosion-induced degradation. Constructed from SAE Grade 5 steel, it delivers a robust 120,000 psi tensile strength and Rockwell C25 hardness, making it ideal for heavy-duty machinery, construction equipment, and automotive assemblies where medium to high strength is critical. The zinc yellow-chromate plating provides an added layer of protection against moisture and chemicals, reducing maintenance needs in outdoor or corrosive environments. With its coarse UNC threads and external square drive, it enables quick, secure fastening in wood, metal, and composite materials, streamlining installation processes while ensuring long-term reliability. This screw is a trusted solution for applications requiring durable, standardized square head bolts that meet rigorous performance demands.

Specification Summary & Compliance

This fastener adheres to precise dimensional tolerances, including Unified Standard Class 2A thread fit and UNC coarse threading with a 3/8"-16 size. It conforms to ASME B18.2.1 and SAE J429 specifications, ensuring consistency and reliability in industrial use. The product meets common regulatory requirements for quality and safety, supporting compliance in various engineering applications.