S-92865A372 1/2"-20 x 6" 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 under heavy loads and reduces the risk of fastener failure in critical applications.
• Superior corrosion resistance provided by the zinc plating extends the screw's service life, even in demanding or mildly corrosive environments.
• Precise Class 2A thread fit on the UNF fine thread profile allows for smoother engagement and a more secure, vibration-resistant connection.
• High durability and wear resistance are guaranteed by the Grade 5 steel construction and a Rockwell C25 hardness rating.
• Optimal torque transmission is achieved with the standard 3/4" external hex head, facilitating easy installation with common tools.
• Full 6-inch threading offers maximum grip length and flexibility for a wide range of material thicknesses and assembly requirements.
• Guaranteed compliance with ASME B18.2.1 and RoHS 3 ensures product reliability, interchangeability, and environmental safety.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to solve common industrial challenges such as joint loosening under vibration and structural weakness. The 1/2"-20 UNF fine threading provides a larger number of threads per inch compared to coarse threads, resulting in a finer adjustment capability and a tighter seal, which is critical in precision assemblies and high-vibration machinery. Manufactured from high-strength steel and finished with a protective zinc plating, it effectively combats corrosion, reducing maintenance needs and downtime in applications from heavy equipment manufacturing to structural frameworks. Its fully threaded design and 6-inch length make it exceptionally versatile for securing thick materials or components where maximum thread engagement is required for load distribution.

Specification Summary & Compliance

This fastener features a 1/2"-20 UNF thread with a Class 2A thread fit for consistent, precision assembly. It is manufactured to meet the dimensional and mechanical requirements of ASME B18.2.1 and the material specifications of SAE J429 for Grade 5. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant, ensuring it is free from hazardous substances and suitable for use in regulated markets.