S-98935A540 1 3/8"-4 x 6 ft. ASTM A108 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Precise 0.25" travel per turn enables accurate linear motion control for automated systems and positioning equipment.
• Grade 2 carbon steel construction provides excellent tensile strength (53,000 psi) and durability for heavy-duty industrial applications.
• Class 2G thread fit ensures smooth engagement with mating nuts while maintaining proper clearance for reliable performance.
• Left-hand Acme threading offers reverse motion capability for specialized mechanical arrangements and safety applications.
• Full 6-foot length with complete threading allows for maximum flexibility in installation and long-stroke applications.
• Rockwell B61 hardness rating maintains thread integrity and wear resistance through extended service cycles.
• RoHS 3 and REACH compliance ensures environmental regulatory adherence for global manufacturing operations.

Professional Applications & Engineering Value

This left hand Acme lead screw delivers exceptional value in precision motion control systems where reverse threading and reliable positioning are critical. The Grade 2 carbon steel construction, manufactured to ASTM A108 specifications, provides the necessary strength and durability for industrial automation, CNC machinery, and material handling equipment. The fully threaded design along the entire 6-foot length allows for continuous engagement in long-travel applications, while the Class 2G thread fit ensures smooth operation with minimal backlash. The left-hand Acme thread configuration is particularly valuable in applications requiring opposite-direction movement or as a safety feature in systems where unintended loosening must be prevented. This combination of precise engineering and robust materials addresses common challenges in industrial settings, including wear resistance, positioning accuracy, and long-term reliability under continuous operation.

Specification Summary & Compliance

This 1 3/8"-4 Acme lead screw features Class 2G thread fit tolerances suitable for general purpose applications with proper clearances. The component meets ASTM A108 material specifications and demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include a tensile strength of 53,000 psi and Rockwell B61 hardness, ensuring reliable performance in industrial motion control systems. The left-hand Acme threading with single start configuration provides consistent 0.25" travel per revolution for precise linear motion applications.