S-98940A619 3/8"-16 x 3 ft. Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional positioning accuracy with ±0.009" per foot tolerance for reliable, repeatable motion control in automated systems.
• Superior strength and wear resistance from hardened 4140 alloy steel, capable of withstanding high loads up to 125,000 psi tensile strength.
• Optimized power transmission with a 0.063" travel distance per turn and single-start ACME thread for smooth, efficient linear motion.
• Enhanced durability and corrosion protection from the black-oxide surface treatment, extending service life in industrial environments.
• Precise thread engagement with Class 2C fit, ensuring minimal backlash and consistent performance in high-precision assemblies.
• Full 3-foot length and complete threading for versatile integration into various machinery and positioning systems.
• Compliance with environmental standards including RoHS 3, ensuring safety and regulatory adherence for global manufacturing.

Professional Applications & Engineering Value

This 3/8-16 ACME lead screw is engineered to solve critical challenges in precision motion control and high-load applications. The hardened 4140 alloy steel construction, with a Brinell 271 hardness, provides exceptional resistance to wear and deformation under continuous operation, reducing maintenance cycles in CNC machinery, automated positioning systems, and industrial actuators. The ACME thread type and Class 2C thread fit deliver reliable power transmission with minimal backlash, essential for applications requiring exact linear movement, such as 3D printers, medical devices, and packaging equipment. The black-oxide finish further enhances corrosion resistance, making it suitable for environments where moisture or chemicals are present. By combining high tensile strength (125,000 psi) with tight ±0.009" per foot accuracy, this lead screw ensures long-term performance and precision in demanding industrial settings.

Specification Summary & Compliance

This lead screw adheres to inch system measurements with a Class 2C thread fit for precise engagement. It features a 3/8"-16 ACME thread with a right-hand direction and is fully threaded across its 3-foot length. The manufacturing process includes hardening heat treatment to achieve a Brinell 271 hardness and 125,000 psi tensile strength. Compliance with RoHS 3 (2015/863/EU) is confirmed, ensuring the product meets environmental and safety standards for use in various industries.