S-92778A135 3/8"-16 x 5/8" 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.
• Exceptional holding power provided by the Class 3A thread fit, ensuring minimal backlash and reliable, vibration-resistant assemblies.
• Easy installation and removal with a 3/16" hex drive, allowing for high torque application in confined spaces due to the headless design.
• Reduced component marring thanks to the oval tip, which provides a secure grip while minimizing damage to the contact surface.
• Enhanced durability and strength from a Rockwell B80 hardness, offering excellent resistance to wear and deformation under load.
• Wide compatibility and reliable engagement with 3/8"-16 UNC coarse threads, facilitating quick assembly and disassembly in various applications.
• Guaranteed regulatory compliance, meeting ASME B18.3, RoHS 3, and REACH standards for safe, globally acceptable use.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex headless set screw is engineered to solve critical challenges in precision assembly and motion control systems. Manufactured from 18-8 Stainless Steel, it provides excellent resistance to rust and corrosion, making it suitable for demanding environments like food processing, marine, and outdoor machinery. The Class 3A thread fit and coarse thread spacing ensure tight tolerances and rapid installation, reducing the risk of loosening under vibration—a common issue in rotating components and shaft collars. The headless design with a hex drive allows for flush mounting in tight spaces, while the oval tip concentrates force for a secure, non-slip grip without damaging precision parts. Ideal for securing gears, pulleys, and knobs, this set screw delivers reliable performance in industrial set screw applications where precision and durability are paramount.

Specification Summary & Compliance

This set screw features a 3/8"-16 UNC thread with a Class 3A fit for high precision and a coarse thread spacing to facilitate quick assembly. It complies with the ASME B18.3 standard for dimensional accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets strict environmental and safety regulations for hazardous substances.