S-92865A153 1/4"-20 x 1 5/8" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

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 plating extends service life and maintains integrity in various environmental conditions.
• High hardness rating (Rockwell C25) provides excellent wear resistance and durability under repetitive stress.
• Coarse UNC threading with Class 2A fit allows for faster installation and easier alignment, saving assembly time.
• Partially threaded design offers secure clamping force on specific sections, preventing loosening in vibration-prone setups.
• External hex drive enables high-torque application with standard tools, ensuring tight and consistent fastening.
• Full compliance with ASME B18.2.1 guarantees dimensional accuracy and interchangeability, streamlining procurement and inventory management.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws address critical challenges in machinery assembly, structural frameworks, and equipment manufacturing. The high-strength steel construction combined with a zinc-plated finish resists rust and corrosion, making them ideal for environments exposed to moisture or chemicals. The 1/4"-20 coarse thread and partial threading design ensure rapid installation and secure fastening in materials where full threading isn't necessary, reducing material stress. With an external hex drive, they allow for efficient torque transfer, minimizing slippage during high-stress operations. These screws are trusted in automotive, construction, and manufacturing sectors for their reliability under 120,000 psi tensile loads, providing long-term performance and reducing maintenance costs.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and adheres to UNC coarse thread standards for consistent engagement. Manufactured in compliance with ASME B18.2.1 and SAE J429 Grade 5 specifications, it ensures dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in global supply chains.