S-92311A358 5/16"-18 x 3" ASME B18.3 Set Screws
Set Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
- Superior holding power from Class 3A thread fit, providing tighter tolerances and reduced risk of loosening under vibration.
- High durability and wear resistance with Rockwell B80 hardness, maintaining performance in demanding applications.
- Secure, non-slip fastening enabled by the hex drive and cup tip design, allowing precise torque application and firm grip.
- Easy installation and removal with coarse UNC threads and right-hand direction, speeding up assembly processes.
- Space-saving headless design ideal for confined spaces, offering flush mounting without protruding components.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
Professional Applications & Engineering Value
This 5/16"-18 UNC Class 3A set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. Made from 18-8 stainless steel, it resists rust and chemical exposure, making it suitable for machinery, automotive, and outdoor equipment. The headless hex design with a cup tip ensures maximum contact and clamping force, preventing movement in shafts, collars, and pulleys. Its coarse thread spacing and Class 3A thread fit provide quick assembly and high precision, reducing maintenance needs. Ideal for industrial set screws applications, it enhances operational efficiency and longevity in dynamic environments.
Specification Summary & Compliance
This set screw adheres to precise Class 3A thread fit and UNC thread standards, with dimensions including a 5/16"-18 thread size, 3" length, and 5/32" hex drive. Manufactured under ASME B18.3 specifications, it ensures consistent quality and performance. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for global industrial use.
