S-92991A221 3/8"-16 x 5/8" 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
- Superior corrosion resistance due to high-quality brass construction, ideal for humid or chemically aggressive environments.
- Exceptional holding power and minimal component damage from the cup point tip design, ensuring secure and reliable fastening.
- High-strength threading with precise fit from the Class 3A UNC coarse thread, providing excellent vibration resistance in dynamic applications.
- Easy installation and high torque capability with the 3/16" hex drive, allowing for efficient assembly with standard tools.
- Enhanced durability and wear resistance from the Rockwell B55 hardness, extending the service life of the fastener.
- Space-saving and streamlined design as a headless set screw, perfect for applications with limited clearance.
- Guaranteed reliability and interchangeability by conforming to the rigorous ASME B18.3 standard.
Professional Applications & Engineering Value
This brass set screw is engineered to solve critical challenges in precision assemblies where corrosion resistance, reliable clamping force, and space constraints are paramount. The UNC coarse thread with a Class 3A fit ensures rapid installation and superior resistance to loosening under vibration, making it ideal for machinery, automotive components, and electrical equipment. The headless and cup point design provides a flush finish and bites securely into the shaft, preventing axial movement without causing significant surface damage. Manufactured from brass with a Rockwell B55 hardness, it offers an optimal balance of strength and non-magnetic properties, essential for specialized industrial and marine applications.
Specification Summary & Compliance
This set screw features a 3/8"-16 UNC thread with a Class 3A fit for high precision. It is manufactured in accordance with ASME B18.3 specifications and is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for global industrial use.
