S-99015A270 5/8"-8 x 3 ft. Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional positioning accuracy with ±0.0003" per inch tolerance for reliable, repeatable motion control in demanding applications.
• Superior strength and durability from 4140 alloy steel, offering a high 95,000 psi tensile strength and Brinell 200 hardness for long service life under heavy loads.
• Corrosion-resistant Black-Oxide finish enhances surface protection, reducing wear and extending the component's lifespan in industrial environments.
• Dual-thread direction versatility with both right-hand and left-hand 16.5" usable threads on a single screw, enabling complex bidirectional motion systems.
• Optimized power transmission with a standard 5/8"-8 Acme thread and 0.125" travel per turn, providing efficient force transfer and smooth operation.
• Broad industrial compatibility due to Class 2C thread fit, ensuring reliable engagement with standard Acme nuts for simplified assembly and maintenance.
• Compliance with major environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and regulated industries.

Professional Applications & Engineering Value

This high-precision 5/8-8 ACME lead screw is engineered to solve critical challenges in precision motion control systems. The Black-Oxide 4140 alloy steel construction provides the necessary 95,000 psi tensile strength and wear resistance to handle continuous operation in CNC machinery, automated positioning tables, and heavy-duty linear actuators. The inclusion of both right-hand and left-hand threading on a single, fully threaded 3-foot component allows engineers to design more compact and efficient bidirectional drives without requiring multiple screws. The ±0.0003" per inch accuracy is crucial for applications where positional repeatability directly impacts product quality, such as in precision manufacturing, metrology equipment, and robotic assembly systems, reducing downtime and maintenance costs.

Specification Summary & Compliance

This lead screw features a 5/8"-8 Acme thread with a Class 2C thread fit and a travel distance of 0.125" per turn. It is manufactured from 4140 alloy steel with a Black-Oxide surface treatment. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use worldwide.