S-92313A539 1/4"-20 x 5/8" ASME B18.3 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance in harsh environments due to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
- Precise and secure fastening with Class 3A thread fit, ensuring tight tolerances and reduced risk of loosening under vibration.
- High-strength performance backed by Rockwell B80 hardness, providing excellent durability and resistance to wear.
- Easy installation and removal using the 1/8" hex drive, allowing for efficient assembly with standard tools.
- Reliable grip and minimal surface damage from the cup tip design, which concentrates force for secure component positioning.
- Broad industry compliance with ASME B18.3 specifications, RoHS 3, and REACH, ensuring safety and regulatory adherence.
- Optimized for coarse threading (UNC) in the 1/4"-20 size, facilitating quick assembly and disassembly in various materials.
Professional Applications & Engineering Value
This 316 stainless steel set screw is engineered to address critical challenges in industrial settings, such as corrosion from moisture, chemicals, and saltwater exposure. Its UNC coarse threading and Class 3A fit deliver reliable, vibration-resistant connections in machinery, automotive components, and structural assemblies, minimizing maintenance needs. The hex headless design with a cup tip ensures flush mounting and strong clamping force without protruding parts, making it ideal for confined spaces. By combining high Rockwell B80 hardness with regulatory compliance, this fastener supports long-term performance in demanding applications while meeting environmental and safety standards.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 standards, with precise UNC coarse threads in a 1/4"-20 size and Class 3A thread fit for high accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free from hazardous substances. Dimensions include a 5/8" length and 1/8" hex drive, manufactured from 316 stainless steel for consistent quality and performance in industrial fastening applications.
