S-92311A345 7/16"-20 x 3/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional holding power and vibration resistance due to the Class 3A thread fit and fine UNF thread spacing.
• High-strength performance backed by a Rockwell B80 hardness rating for reliable, repeated use without deformation.
• Secure, flush installation with a headless and cup tip design, preventing protrusion and providing positive seating.
• Easy installation and high-torque capability with a 7/32" hex drive, allowing for efficient assembly in confined spaces.
• Guaranteed dimensional precision and interchangeability, manufactured to meet ASME B18.3 specifications.
• Safe for regulated industries, fully compliant with RoHS 3 and REACH environmental directives.

Professional Applications & Engineering Value

This 7/16"-20 UNF Class 3A set screw is engineered to address critical challenges in industrial assembly and precision machinery. The 18-8 Stainless Steel material provides excellent resistance to oxidation and corrosion, making it suitable for applications exposed to moisture, chemicals, or outdoor elements. Its headless design and cup tip ensure a flush mount, minimizing obstruction and maximizing grip on the shaft or component, which is vital for preventing slippage in high-vibration environments like motors, gears, and rotating assemblies. The fine thread spacing and Class 3A thread fit offer tighter tolerances and superior clamping force compared to coarse threads, reducing the risk of loosening under dynamic loads. Combined with the hex drive for secure tool engagement, this set screw delivers reliable performance in automotive, aerospace, and heavy equipment applications where precision and durability are non-negotiable.

Specification Summary & Compliance

This set screw adheres to strict dimensional and quality standards, including a Class 3A thread fit for precision and a UNF (Unified National Fine) thread type with a size of 7/16"-20. It is manufactured in compliance with the ASME B18.3 specification, ensuring consistent performance and interchangeability. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.