S-91390A665 M12 x 40 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance due to the extra fine 1.25mm thread pitch, ensuring your assemblies stay securely locked in high-stress environments.
• Exceptional durability and wear resistance provided by the alloy steel construction and Rockwell C45 hardness, extending the service life of your components.
• Precise and reliable fastening with a Class 5g6g thread fit, guaranteeing consistent performance and ease of installation in precision applications.
• High torque capability and secure installation from the 6mm hex drive and headless design, allowing for flush mounting and access in confined spaces.
• Enhanced gripping force with the cup tip, which digs into contact surfaces to prevent loosening and improve positional accuracy.
• Guaranteed quality and interchangeability through compliance with DIN 916 and ISO 4029 international standards.
• Safe for use in regulated industries as it is RoHS 3 and REACH compliant, meeting the latest environmental and safety directives.

Professional Applications & Engineering Value

This M12 set screw is engineered to solve critical challenges in precision machinery and industrial assemblies. The alloy steel material, combined with a Rockwell C45 hardness, provides the necessary strength to resist shear forces and wear in demanding applications like automotive transmissions, aerospace components, and high-precision manufacturing equipment. The extra fine thread with a 1.25mm pitch offers superior adjustment sensitivity and vibration resistance, which is crucial for maintaining alignment in rotating assemblies and sensitive instrumentation. The headless hex drive design allows for a clean, flush finish, making it ideal for use in confined spaces where protrusions are not permissible. This metric set screw delivers reliable, long-term performance by preventing back-out and maintaining clamp load under dynamic loads, ensuring your engineering designs operate as intended.

Specification Summary & Compliance

This set screw features an M12 x 1.25mm extra fine thread with a Class 5g6g thread fit, ensuring high dimensional accuracy and interchangeability per ISO standards. It is manufactured to meet the specifications of DIN 916 and ISO 4029. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for hazardous substances.