S-91381A593 5/16"-18 x 1 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating on alloy steel, extending service life in harsh industrial environments.
• Precise, reliable fastening ensured by Class 3A thread fit, minimizing loosening and vibration-related failures.
• Damage-free component protection thanks to the soft brass tip, ideal for delicate surfaces and repeated adjustments.
• High-strength durability with Rockwell C28 hardness, providing robust performance under heavy loads.
• Easy installation and removal using a 5/32" hex drive, allowing quick assembly in confined spaces.
• Wide compatibility with coarse UNC threads, facilitating secure engagement in various materials.
• Regulatory peace of mind through compliance with ASME B18.3, RoHS 3, and REACH standards.

Professional Applications & Engineering Value

This 5/16"-18 UNC set screw is engineered to address common industrial challenges like component slippage and surface damage. The black-oxide alloy steel construction offers superior resistance to rust and wear, while the Class 3A thread fit guarantees tight tolerances for vibration-resistant assemblies. Featuring a brass soft tip, it prevents marring on shafts, gears, and pulleys, making it ideal for precision machinery, automotive systems, and conveyor equipment. Its headless design and hex drive enable flush mounting in tight spaces, ensuring reliable performance in demanding applications without compromising integrity.

Specification Summary & Compliance

This set screw adheres to Class 3A thread fit for high precision, with UNC coarse threads (5/16"-18) and right-hand direction. Manufactured per ASME B18.3 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental and safety standards for industrial use.