S-92311A355 5/16"-18 x 1 1/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and extending service life.
• Exceptional holding power provided by the cup tip design, ensuring secure fastening and preventing component slippage.
• Precise thread engagement with UNC Class 3A fit, offering tighter tolerances for reliable, vibration-resistant assemblies.
• Easy installation and removal using the 5/32" hex drive, allowing for efficient maintenance with standard tools.
• Enhanced durability from Rockwell B80 hardness, resisting wear and deformation under high-stress conditions.
• Broad compatibility with coarse thread spacing and right-hand direction, simplifying integration into various machinery and equipment.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 18-8 Stainless Steel set screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly inefficiencies. Its headless design with a hex drive allows for flush mounting in tight spaces, reducing protrusion risks and enabling seamless integration in machinery, automotive, and aerospace components. The UNC coarse threads and Class 3A thread fit provide superior grip and resistance to dynamic loads, minimizing maintenance needs. Made from corrosion-resistant material, it excels in humid or chemical-exposed environments, while the cup tip ensures concentrated clamping force for permanent fastening solutions. Ideal for securing shafts, collars, and pulleys, this set screw enhances reliability in high-performance industrial applications, backed by rigorous standards for long-term value.

Specification Summary & Compliance

This set screw adheres to precise dimensional standards, including UNC thread type with Class 3A thread fit for high accuracy and a thread size of 5/16"-18. It meets ASME B18.3 manufacturing specifications, ensuring consistent quality and performance. Additionally, the product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental suitability for global industrial use.