S-99030A418 1"-4 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.
• Robust 1018 Carbon Steel construction provides a high tensile strength of 64,000 psi and Brinell 126 hardness for long-term durability under load.
• Left-hand Acme threading offers design flexibility for applications requiring reverse-direction linear motion or counter-rotation.
• Class 2C thread fit ensures smooth operation with sufficient clearance for nut engagement, reducing binding and wear.
• Fully threaded, single-start design with a 1:1 speed ratio delivers consistent 0.25" travel per turn for predictable and straightforward actuation.
• Compliance with RoHS 3 and REACH regulations guarantees the component is free of hazardous substances, making it suitable for global industrial markets.
• 3-foot length provides ample travel distance for a wide range of machine layouts and positioning requirements.

Professional Applications & Engineering Value

This 1"-4 Left-Hand Acme Lead Screw is engineered to solve critical challenges in industrial motion control. The 1018 Carbon Steel core delivers the necessary 64,000 psi tensile strength to handle significant axial loads without deformation, while the Acme thread form provides high efficiency and load-bearing capacity. The left-hand thread direction is essential for specialized machinery where standard right-hand threads would cause interference or to create opposing motions in dual-screw systems. Its fully threaded, single-start design with a consistent 0.25" travel per turn ensures precise linear displacement, making it ideal for applications like CNC positioning tables, lifting mechanisms, and precision actuators where backlash must be minimized and movement must be accurately controlled.

Specification Summary & Compliance

This precision Acme lead screw features a 1"-4 thread size with a Class 2C thread fit per standard Acme threading specifications, providing the defined clearance for smooth nut travel. The manufacturing ensures a travel distance accuracy of ±0.009" per foot. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to strict environmental and safety standards for industrial use.