S-91390A683 M16 x 50 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with fine 1.5mm pitch threads for maximum resistance to vibration and loosening in demanding applications.
• Exceptional durability provided by alloy steel construction and Rockwell C45 hardness, ensuring long service life under high stress.
• Precise and reliable fit due to Class 5g6g thread tolerance, guaranteeing consistent performance and ease of assembly.
• Secure and tamper-resistant fastening enabled by the headless design and 8mm hex drive, ideal for flush-mount applications.
• Enhanced grip and minimal surface damage from the cup tip, which concentrates clamping force for a firm hold on shafts and components.
• Broad industrial compatibility as a right-hand thread metric set screw conforming to globally recognized DIN 916 and ISO 4029 standards.
• Safe for regulated environments with full compliance to RoHS 3 and REACH, ensuring no hazardous substances are used.

Professional Applications & Engineering Value

This M16 set screw is engineered to address critical challenges in machinery assembly, automotive systems, and precision equipment where vibration resistance and secure positioning are paramount. The alloy steel material, hardened to Rockwell C45, provides excellent tensile strength and wear resistance, preventing failure under cyclic loads. Its fine thread with a 1.5mm pitch offers a greater number of threads per unit length compared to coarse threads, resulting in superior clamping force and reduced risk of loosening in dynamic environments. The headless design and 8mm hex drive allow for flush installation in tight spaces, while the cup tip ensures minimal marring of the contact surface, making it ideal for securing gears, pulleys, and collars onto shafts without slippage. Fully compliant with DIN 916 / ISO 4029 specifications, this metric set screw delivers reliable performance in industrial applications requiring precise axial location and repeatable fastening.

Specification Summary & Compliance

This set screw features a metric M16 x 1.5mm fine thread with Class 5g6g tolerance for precise fit and interchangeability. It is manufactured in accordance with DIN 916 and ISO 4029 standards, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances for safe use in various industrial sectors.