S-7549K17 M12 x 3/4" DIN 103 Metric Precision Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance and durability with manganese bronze construction, ideal for harsh industrial environments
• High-strength carbon steel flange provides superior mounting stability and load distribution across surfaces
• Precision 7H thread fit ensures smooth, reliable engagement with lead screws for accurate motion control
• Optimized 3mm pitch and single-start thread delivers consistent 3mm travel per revolution for predictable linear movement
• Robust 1100 lbs dynamic thrust capacity handles heavy loads while maintaining performance in demanding applications
• Hardened components (Brinell 126 nut / Brinell 150 flange) resist wear and deformation for extended service life
• Standardized DIN 103 compliance guarantees interchangeability and quality assurance in metric trapezoidal systems

Professional Applications & Engineering Value

This M12 x 3mm metric trapezoidal flange nut combines the superior wear resistance of manganese bronze with the structural strength of a 12L14 carbon steel flange to solve critical engineering challenges in precision linear motion systems. The trapezoidal thread profile provides optimal load distribution and efficiency in lead screw assemblies, while the integrated flange with four mounting holes eliminates the need for separate washers, simplifying installation in CNC machinery, industrial automation, and positioning equipment. The right-hand thread with 7H fit ensures minimal backlash and precise repeatability, addressing common issues of thread wear and positioning inaccuracy in high-cycle applications. With its 1100 lbs dynamic thrust capacity, this nut delivers reliable performance in demanding environments where both precision and durability are paramount.

Specification Summary & Compliance

This flange nut features M12 x 3mm metric trapezoidal threads with 7H thread fit tolerance per ISO standards, ensuring precise engagement with matching lead screws. The assembly maintains DIN 103 specifications for trapezoidal thread forms, with component hardness ratings of Brinell 126 for the manganese bronze nut and Brinell 150 for the carbon steel flange. Manufacturing complies with international metric standards for dimensional accuracy, including the 2 39/64" flange diameter, 17/64" mounting holes, and consistent 3mm travel per revolution. The product meets industrial requirements for material composition and performance in precision motion control applications.