S-94355A748 1/2"-20 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Exceptional holding power and vibration resistance due to the Class 3A fine thread fit, ensuring secure fastening in critical assemblies.
• High-strength performance backed by a Rockwell B80 hardness, providing excellent durability under load.
• Easy and secure installation with a 1/4" hex drive, allowing for high torque application without head protrusion.
• Precise and reliable positioning using a flat tip design, which minimizes component damage and offers a consistent clamping force.
• Guaranteed dimensional accuracy and interchangeability as it meets the stringent ASME B18.3 standard.
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental directives.

Professional Applications & Engineering Value

This hex headless set screw is engineered to address common challenges in precision machinery and industrial equipment, where space constraints and vibration loosening are critical concerns. Made from 18-8 stainless steel, it offers excellent corrosion resistance, reducing maintenance needs in moist or chemical-exposed settings. The UNF fine thread and Class 3A fit provide a tighter tolerance, enhancing grip and preventing backlash in dynamic applications like motor shafts, gears, and adjustable linkages. The headless design with a 1/4" hex drive allows for flush mounting in confined spaces, while the flat tip ensures uniform surface contact, protecting components from indentation. Ideal for OEM and MRO uses, this set screw delivers reliable performance in automotive, aerospace, and manufacturing assemblies, ensuring long-term operational integrity.

Specification Summary & Compliance

This set screw features a 1/2"-20 UNF fine thread with a Class 3A thread fit for high precision, a thread diameter of 0.5", and a length of 1/2". It includes a right-hand thread direction, a flat tip, and is manufactured in accordance with ASME B18.3 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets international environmental and safety standards for hazardous substances.