S-91210A711 M4 x 40 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with high-strength alloy steel construction and Rockwell C45 hardness for reliable, long-term fastening in demanding applications.
• Secure, flush installation thanks to the headless design, ideal for applications where a protruding head is not permissible.
• Precise and easy installation with a 2mm hex drive, allowing for high torque application and reducing the risk of tool slippage.
• Superior resistance to loosening from vibration due to the 90° cone point, which bites into the contact surface for a more secure grip.
• Wide compatibility and easy sourcing with a standard M4 x 0.7mm coarse right-hand thread conforming to Class 5g6g fit.
• Guaranteed quality and reliability as it is manufactured to meet the stringent DIN 914 and ISO 4027 specifications.
• Safe for use in regulated industries with full compliance to RoHS 3 and REACH environmental directives.

Professional Applications & Engineering Value

This M4 set screw is engineered to solve critical challenges in precision assembly and machinery. The alloy steel material, hardened to Rockwell C45, provides the necessary strength to prevent stripping and withstand high stress in dynamic environments. Its headless and hex drive design allows for a clean, flush finish in confined spaces, while the 90° cone point ensures maximum resistance to vibrational loosening by creating a deep indentation in the shaft or component. This makes it an indispensable metric set screw for securing gears, pulleys, and collars onto shafts in automotive, aerospace, and industrial equipment, delivering reliable performance where failure is not an option.

Specification Summary & Compliance

This set screw features an M4 x 0.7mm coarse right-hand thread with a Class 5g6g thread fit, ensuring precise dimensional accuracy and interchangeability. It is manufactured in compliance with DIN 914 and ISO 4027 standards, guaranteeing consistent quality and performance. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental and safety regulations for industrial components.