S-98940A427 1 1/2"-4 x 6 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 wear resistance and corrosion protection from hardened Black-Oxide 4140 alloy steel construction, extending service life in harsh industrial environments
• High load-bearing capacity with 125,000 psi tensile strength and Brinell 271 hardness for demanding applications requiring robust performance
• Consistent 0.25" linear travel per revolution with single-start, fully threaded design for predictable speed and positioning in precision machinery
• Optimized left-hand thread configuration for specialized applications requiring reverse-direction motion or counter-rotational systems
• Precision Class 2C thread fit ensures smooth operation with minimal backlash in high-accuracy positioning systems
• Environmental compliance assurance with RoHS 3 certification for use in regulated industrial and international markets

Professional Applications & Engineering Value

This left-hand Acme lead screw delivers critical engineering value in applications where precision linear motion and durability are paramount. The hardened Black-Oxide 4140 alloy steel construction addresses common industrial challenges of wear, corrosion, and mechanical failure in high-cycle operations. The Class 2C thread fit provides the optimal balance between clearance and precision, minimizing backlash in CNC machinery, automated positioning systems, and industrial actuators. With its ±0.009" per foot accuracy and consistent 0.25" travel per turn, this component ensures reliable performance in manufacturing equipment, material handling systems, and precision instrumentation where positional repeatability directly impacts production quality and operational efficiency.

Specification Summary & Compliance

This precision 1 1/2"-4 left-hand Acme lead screw features Class 2C thread fit per Acme thread standards, ensuring proper clearance for smooth operation. The 6-foot length with fully threaded, single-start design provides consistent performance throughout the entire screw. Manufacturing complies with RoHS 3 (2015/863/EU) requirements for environmental safety. Mechanical properties include 125,000 psi tensile strength and Brinell 271 hardness from the heat treatment process, delivering reliable performance in industrial motion control applications.