S-98940A737 3/4"-6 x 3 ft. Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional dimensional stability with ±0.009" per foot accuracy ensures reliable, repeatable positioning in automated systems.
• Superior strength and durability from hardened 4140 alloy steel construction, rated for 125,000 psi tensile strength to handle high-load applications.
• Enhanced corrosion resistance and reduced friction with the black-oxide surface treatment, extending service life in demanding industrial environments.
• Precise left-hand thread engagement with Class 2C fit provides smooth, backlash-resistant motion for reverse-direction mechanisms.
• Optimized linear travel of 0.167" per revolution with a single-start Acme thread offers controlled, predictable movement.
• Full 3-foot length and complete threading allow for versatile integration into various linear motion assembly setups.
• Compliance with RoHS 3 standards ensures environmental safety and meets global regulatory requirements for industrial components.

Professional Applications & Engineering Value

This left-hand Acme lead screw is engineered to solve critical challenges in precision linear motion systems where reverse-direction operation or precise positional control is required. The hardened 4140 alloy steel core, combined with a black-oxide coating, provides exceptional wear resistance and reduces maintenance in high-cycle applications such as CNC machinery, automated positioning tables, and clamping devices. The Class 2C thread fit and Acme thread form ensure minimal backlash and reliable power transmission, making it ideal for applications demanding consistent accuracy under load. Its fully threaded, 3-foot design offers flexibility for custom installations, while the single-start thread with a 1:1 speed ratio guarantees straightforward integration into existing drive systems, enhancing operational efficiency and reducing downtime.

Specification Summary & Compliance

This lead screw adheres to Class 2C thread fit standards for Acme threads, ensuring precise engagement and dimensional consistency. Manufactured from hardened 4140 alloy steel with a Brinell hardness of 271, it meets rigorous mechanical performance criteria. The product is fully compliant with RoHS 3 (2015/863/EU) regulations, confirming its suitability for use in environmentally conscious industrial markets. Key specifications include a 3/4"-6 thread size, 0.167" travel per turn, and a ±0.009" per foot accuracy for travel distance, supporting reliable operation in precision engineering applications.