S-98940A303 3/8"-12 x 18" Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Superior wear resistance and corrosion protection through hardened Black-Oxide 4140 Alloy Steel construction, extending service life in demanding industrial environments.
• Exceptional motion control accuracy with a travel distance tolerance of ±0.009" per foot, ensuring reliable and repeatable positioning.
• High load-bearing capacity from a tensile strength of 125,000 psi and Brinell 271 hardness, providing durability under significant stress.
• Optimized for smooth engagement and reduced backlash with a Class 2C thread fit, enhancing the efficiency of power transmission systems.
• Consistent and predictable linear movement due to the 0.083" travel per turn and single thread start, simplifying system design and control.
• Broad compatibility and environmental responsibility with RoHS 3 compliance, meeting stringent international regulations for hazardous substances.
• Ready for immediate integration as a fully threaded, 18-inch right-hand ACME component, minimizing assembly time and complexity.

Professional Applications & Engineering Value

This 3/8-12 ACME lead screw is engineered to solve critical challenges in motion control and linear actuation systems. The Black-Oxide 4140 Alloy Steel material, combined with a hardening process, provides exceptional resistance to wear and environmental factors, making it ideal for industrial automation, CNC machinery, and precision positioning equipment. The ACME thread type and Class 2C thread fit ensure efficient power transmission with minimal backlash, which is crucial for maintaining accuracy in repetitive operations. Its fully threaded 18-inch length and consistent 0.083" travel per turn allow for reliable and predictable linear motion, reducing downtime and maintenance costs in high-cycle applications.

Specification Summary & Compliance

This precision ACME lead screw adheres to Class 2C thread fit standards, ensuring proper clearance for smooth operation. Key dimensional specifications include a travel distance per turn of 0.083" with an accuracy of ±0.009" per foot. The component is manufactured from hardened Black-Oxide 4140 Alloy Steel, providing a tensile strength of 125,000 psi and a hardness of Brinell 271. It is fully compliant with RoHS 3 (2015/863/EU) regulations, confirming its suitability for use in environmentally conscious industrial settings.