S-98940A306 5/8"-8 x 18" Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional Durability - Hardened 4140 alloy steel construction with Brinell 271 hardness ensures superior wear resistance and long service life in demanding industrial environments.
• High Tensile Strength - 125,000 psi tensile strength provides reliable performance under heavy loads, reducing the risk of mechanical failure.
• Precision Motion Control - ±0.009" per foot travel accuracy guarantees consistent positioning for applications requiring exact movement.
• Optimized Efficiency - 0.125" travel distance per turn delivers predictable linear motion with minimal backlash, enhancing operational smoothness.
• Corrosion-Resistant Protection - Black-oxide surface treatment offers improved corrosion resistance, extending component lifespan in harsh conditions.
• Standardized Compatibility - Class 2C thread fit ensures easy integration with standard ACME nuts, simplifying assembly and maintenance.
• Environmental Compliance - RoHS 3 (2015/863/EU) compliance meets international environmental regulations, supporting sustainable manufacturing practices.

Professional Applications & Engineering Value

This 5/8-8 ACME lead screw is engineered for precision motion control systems where reliability and accuracy are critical. The Black-Oxide 4140 alloy steel material, combined with hardening to Brinell 271 hardness, addresses common industrial challenges such as component wear and deformation under continuous operation. Its fully threaded design and right-hand thread direction provide consistent force transmission in applications like CNC machinery, automated positioning systems, and lifting equipment. The Class 2C thread fit ensures minimal play, reducing vibration and improving overall system stability. By delivering ±0.009" per foot travel accuracy and a predictable 0.125" travel per turn, this lead screw minimizes operational errors and enhances productivity in industrial automation, packaging, and material handling sectors.

Specification Summary & Compliance

This precision ACME lead screw adheres to Class 2C thread fit standards, ensuring dimensional accuracy and compatibility with standard nuts. Manufactured from 4140 alloy steel with a Black-Oxide finish, it meets specified mechanical properties including 125,000 psi tensile strength and Brinell 271 hardness. The component is fully compliant with RoHS 3 (2015/863/EU) regulations, confirming its suitability for use in environmentally conscious industrial applications without hazardous substances.