S-99030A475 3/4"-8 x 3 ft. Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional Travel Accuracy - Maintains ±0.009" per foot precision for reliable positioning and repeatable motion control in automated systems.
• High Tensile Strength Construction - Made from 1018 Carbon Steel with 64,000 psi tensile strength, ensuring durability under heavy loads and extended service life.
• Optimized Thread Design - Features a Class 2C thread fit and left-hand Acme threading for secure, backlash-resistant engagement in specialized mechanical applications.
• Consistent Motion Transfer - Delivers a precise 0.125" travel distance per turn with a 1:1 speed ratio, providing predictable and efficient linear movement.
• Robust Material Hardness - Brinell 126 hardness rating offers excellent wear resistance, reducing maintenance needs in high-cycle industrial environments.
• Full-Length Threading - Fully threaded 3-foot length allows for maximum flexibility in installation and continuous motion along the entire screw.
• Standardized Inch System Compatibility - Designed to Acme thread standards for easy integration with existing inch-based machinery and components.

Professional Applications & Engineering Value

This 3/4-8 Left Hand Acme Lead Screw solves critical engineering challenges in precision motion systems where reverse-direction operation or anti-loosening capabilities are required. The 1018 Carbon Steel construction provides the ideal balance of strength and machinability, while the Class 2C thread fit ensures consistent performance in applications demanding minimal backlash. The left-hand Acme threading is particularly valuable in specialized machinery where standard right-hand threads would cause unintended disengagement. With its ±0.009" per foot travel accuracy, this component delivers reliable positioning for CNC equipment, lifting mechanisms, and industrial automation systems where precise linear motion is critical to operational efficiency and product quality.

Specification Summary & Compliance

This precision lead screw features 3/4"-8 Acme left-hand threading with Class 2C thread fit tolerance, ensuring proper clearance for smooth operation. The component maintains ±0.009" per foot travel distance accuracy with a consistent 0.125" travel per turn. Manufactured from 1018 Carbon Steel meeting standard material specifications, it delivers 64,000 psi tensile strength and Brinell 126 hardness for durable performance. The fully threaded 3-foot length provides complete functional coverage. This lead screw conforms to standard Acme thread specifications and is suitable for integration with systems designed to inch measurement standards.