S-92311A532 1/4"-20 x 3/16" 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
• Maximum holding power ensured by Class 3A thread fit for secure, vibration-resistant fastening
• Easy installation and removal with 1/8" hex drive, allowing efficient tool access in confined spaces
• Enhanced grip and minimal slippage from the cup point tip, providing reliable component positioning
• Consistent durability backed by Rockwell B80 hardness, maintaining performance under mechanical stress
• Broad compatibility with UNC coarse threads and right-hand direction for versatile assembly applications
• Regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for safe, quality-assured use

Professional Applications & Engineering Value

This 1/4"-20 UNC Class 3A set screw delivers exceptional engineering value in demanding industrial settings. Crafted from 18-8 stainless steel, it resists rust and corrosion, extending service life in moisture-prone or chemical-exposed applications. The hex headless design with a 1/8" drive enables flush mounting and easy torque application, solving space constraints in machinery, automotive, and electronics assemblies. Its coarse UNC threads and Class 3A fit provide tight tolerances, reducing the risk of loosening under vibration—a common pain point in heavy-duty equipment. The cup point tip bites securely into shafts or components, ensuring precise alignment and reliable torque transmission. Ideal for securing gears, pulleys, and collars, this screw supports industrial fastening solutions that demand strength, repeatability, and compliance with global standards.

Specification Summary & Compliance

This set screw adheres to precise Class 3A thread fit per UNC standards, ensuring dimensional accuracy and reliable engagement. It conforms to ASME B18.3 manufacturing specifications for consistency and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances. With a thread size of 1/4"-20, length of 3/16", and Rockwell B80 hardness, it guarantees durability and repeatable use in professional applications.