S-98940A639 3/4"-10 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 durability from hardened 4140 alloy steel, providing a high 125,000 psi tensile strength to withstand heavy loads and continuous operation.
• Enhanced wear resistance and corrosion protection due to the Black-Oxide surface treatment on the robust Brinell 271 hardness material.
• Predictable and efficient linear motion with a precise 0.1" travel distance per turn from the single-start, fully threaded Acme design.
• Broad compatibility and easy integration ensured by the Class 2C thread fit and right-hand thread direction, conforming to standard inch system components.
• Long-term operational reliability in demanding environments, backed by a 1:1 speed ratio and RoHS 3 compliance for environmental safety.

Professional Applications & Engineering Value

This 3/4"-10 Acme lead screw is engineered to solve critical challenges in precision motion control systems. The Black-Oxide 4140 alloy steel construction, combined with hardening to Brinell 271 hardness, provides exceptional resistance to wear and deformation under high loads, significantly extending service life in CNC machinery, industrial automation, and heavy-duty linear actuators. The Acme thread type and Class 2C thread fit offer a perfect balance between high efficiency and minimal backlash, ensuring smooth, accurate linear movement with a consistent 0.1" travel per turn. Its fully threaded, right-hand design makes it ideal for applications requiring precise positioning and repeatability, reducing maintenance downtime and improving overall system performance in demanding industrial applications.

Specification Summary & Compliance

This lead screw adheres to inch system standards with a 3/4"-10 Acme thread size and Class 2C thread fit for precise engineering tolerances. It is manufactured from hardened 4140 alloy steel with a Brinell 271 hardness and 125,000 psi tensile strength, ensuring compliance with rigorous performance requirements. The component is RoHS 3 (2015/863/EU) Compliant, meeting environmental regulations for use in various global markets.