S-98940A414 3/4"-10 x 6 ft. Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black-oxide coating on 4140 alloy steel provides superior protection against wear and environmental factors, extending service life in demanding industrial settings.
• Precision Motion Control: Maintains tight travel accuracy of ±0.009" per foot, ensuring reliable and repeatable positioning for automated systems and machinery.
• High Load-Bearing Capacity: Hardened construction with 125,000 psi tensile strength and Brinell 271 hardness supports heavy-duty applications without deformation.
• Optimized Thread Engagement: Class 2C thread fit and Acme thread design deliver smooth, low-friction operation and reduced backlash in power transmission.
• Left-Hand Threading for Specialized Configurations: Enables reverse-motion setups or unique assembly requirements in complex mechanical systems.
• Full Threading for Maximum Flexibility: Allows for continuous adjustment and versatile mounting along the entire 6 ft. length, accommodating various nut positions.
• Regulatory Compliance & Safety: Meets RoHS 3 standards, ensuring environmental safety and suitability for global industrial markets.

Professional Applications & Engineering Value

This 3/4"-10 Left Hand Acme Lead Screw is engineered to address critical challenges in precision motion control systems, such as CNC machinery, linear actuators, and automated positioning equipment. The Black-Oxide 4140 Alloy Steel construction, combined with hardening treatment, resists abrasion and fatigue under high-stress cycles, reducing maintenance downtime. Its Acme thread type and Class 2C thread fit ensure efficient power transmission with minimal energy loss, while the left-hand thread direction provides solutions for counter-rotational mechanisms. With a consistent travel distance of 0.1" per turn and stringent accuracy tolerances, it supports applications requiring precise linear movement, such as in packaging, material handling, and industrial robotics, enhancing operational reliability.

Specification Summary & Compliance

This lead screw adheres to inch system measurements with a Class 2C thread fit for Acme threading, ensuring dimensional consistency and compatibility with standard nuts. It is manufactured from hardened 4140 alloy steel and complies with RoHS 3 (2015/863/EU) regulations, confirming its suitability for environmentally conscious industrial use. The product meets general engineering standards for tensile strength (125,000 psi) and hardness (Brinell 271), supporting reliable performance in precision-driven applications.