S-98940A624 3/8"-12 x 3 ft. Fast-Travel Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Enhanced motion control efficiency with a 2:1 speed ratio and 0.167" travel per turn for faster linear movement in automation systems.
• Superior wear resistance and durability from hardened 4140 alloy steel with Brinell 271 hardness, extending service life in high-load applications.
• Exceptional precision and repeatability with ±0.009" per foot travel distance accuracy, ensuring reliable performance in CNC and positioning equipment.
• High tensile strength of 125,000 psi for robust operation under heavy mechanical stress without deformation.
• Corrosion-resistant black-oxide surface providing added protection in industrial environments, reducing maintenance needs.
• Optimized thread engagement with Class 2C fit and two thread starts, delivering smooth, low-friction motion and reduced backlash.
• Compliance with RoHS 3 standards ensuring environmental safety and suitability for global markets.

Professional Applications & Engineering Value

This 3/8"-12 ACME lead screw is engineered to address critical challenges in precision motion control systems, such as CNC machinery, automated actuators, and linear guides. The Black-Oxide 4140 alloy steel construction, combined with hardening treatment, provides exceptional resistance to wear and fatigue, minimizing downtime in continuous operation. With a 2:1 speed ratio and fully threaded design, it enables rapid and accurate linear displacement, ideal for applications requiring fast-travel and repeatable positioning. The right-hand Acme thread and Class 2C fit ensure smooth engagement with nuts, reducing vibration and enhancing operational stability in industrial settings.

Specification Summary & Compliance

This lead screw adheres to inch system standards with a 3/8"-12 thread size and Class 2C thread fit for precise dimensional accuracy. It features a fully threaded, right-hand Acme thread type with two thread starts and a travel distance of 0.167" per turn, maintaining ±0.009" per foot accuracy. Manufactured from hardened 4140 alloy steel with a tensile strength of 125,000 psi and Brinell 271 hardness, it complies with RoHS 3 (2015/863/EU) environmental regulations, ensuring safety and reliability in professional use.