S-91319A209 M6 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with integrated nylon pellet thread locker, preventing loosening in dynamic applications from -50° to 250° F.
• Exceptional mechanical strength from alloy steel construction, offering a high 150,000 psi tensile and 84,000 psi shear strength for demanding loads.
• Precise component alignment enabled by the 8 mm shoulder diameter with tight tolerance, ensuring accurate positioning in assemblies.
• Corrosion-resistant and durable finish with black oxide coating, providing long-lasting protection in harsh industrial environments.
• Easy installation and removal using a standard 4 mm hex drive and knurled socket head, allowing for efficient assembly with common tools.
• Reliable thread engagement due to Class 5g6g thread fit and M6x1 mm coarse pitch, ensuring consistent performance and reduced cross-threading risk.
• Broad regulatory compliance meeting ISO 7379, RoHS 3, and REACH standards, guaranteeing safety and environmental responsibility for global use.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to solve critical challenges in precision machinery and industrial equipment. The alloy steel core and black oxide finish deliver robust corrosion resistance and durability, ideal for environments exposed to moisture and wear. The integrated nylon pellet thread locker effectively counters vibration-induced loosening, a common failure point in automotive, aerospace, and automation systems. With a coarse metric thread and precise shoulder diameter, it facilitates exact alignment in rotating assemblies, such as bearings and pulleys, reducing installation errors and enhancing operational stability. By combining high tensile strength with reliable locking technology, this screw minimizes maintenance downtime and extends service life in demanding applications.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 standards, with a Class 5g6g thread fit ensuring dimensional accuracy and interchangeability. The shoulder diameter tolerance is tightly controlled at -0.049 to -0.01 mm, and shoulder length tolerance ranges from 0 to 0.25 mm for consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable manufacturing practices.