S-94105A575 5/16"-18 x 5/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from the black-oxide finish, extending service life in harsh industrial environments.
• Exceptional holding power and vibration resistance due to the coarse UNC thread and Class 3A precision fit, preventing loosening.
• High-strength durability provided by the alloy steel material with a Rockwell C45 hardness, ensuring reliable performance under load.
• Secure and flush installation with its headless and flat tip design, ideal for applications where a protruding head is not permissible.
• Easy installation and removal with the 5/32" hex drive, allowing for high torque application with standard tools.
• Guaranteed dimensional consistency and interchangeability, manufactured to meet the stringent ASME B18.3 standard.
• Safe for regulated industries, fully compliant with RoHS 3 and REACH environmental directives.

Professional Applications & Engineering Value

This 5/16"-18 UNC Black-Oxide Alloy Steel Set Screw is engineered to solve critical challenges in machinery assembly and precision engineering. Its headless design and flat tip provide a secure, flush fit for securing collars, gears, and pulleys onto shafts without interference. The coarse thread and Class 3A thread fit offer superior resistance to vibrational loosening, a common failure point in dynamic systems. Made from high-strength alloy steel with a black-oxide surface treatment, it combats corrosion effectively, making it a reliable choice for automotive, aerospace, and heavy equipment applications where durability and precision are non-negotiable.

Specification Summary & Compliance

This set screw features a 5/16"-18 UNC coarse thread with a high-precision Class 3A thread fit, ensuring excellent dimensional accuracy and fastening reliability. It is manufactured in compliance with the ASME B18.3 specification and meets critical industry standards for material and performance. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental regulations for hazardous substances.