S-98935A539 1 3/8"-4 x 3 ft. ASTM A108 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Precise linear motion control with 0.25" travel per turn for accurate positioning in industrial automation systems.
• Exceptional durability and wear resistance from Grade 2 carbon steel construction with Rockwell B61 hardness for long service life.
• Reliable left-hand thread operation for specialized applications requiring reverse direction movement or counter-rotation prevention.
• Consistent performance under heavy loads with 53,000 psi tensile strength to handle demanding motion control requirements.
• Precision thread engagement through Class 2G thread fit ensuring smooth operation and reduced backlash in power transmission systems.
• Full-length threading capability providing continuous motion control along the entire 3-foot length for extended travel applications.
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries.

Professional Applications & Engineering Value

This 1 3/8"-4 left hand Acme lead screw delivers critical engineering advantages in precision motion control systems where reliability and accuracy are paramount. The Grade 2 carbon steel construction, hardened to Rockwell B61, provides exceptional resistance to wear and deformation in high-cycle applications. The left-hand Acme threading offers specialized solutions for machinery requiring reverse directional movement, while the Class 2G thread fit ensures minimal play and consistent performance in industrial automation, CNC equipment, and material handling systems. With 0.25" travel per turn, this fully threaded screw enables precise linear positioning in packaging machinery, printing equipment, and assembly automation where controlled movement is essential for operational efficiency and product quality.

Specification Summary & Compliance

This Acme lead screw features precision 1 3/8"-4 left-hand Acme threading with Class 2G thread fit tolerance for optimal engagement. Manufactured from Grade 2 carbon steel with 53,000 psi tensile strength and Rockwell B61 hardness, it delivers 0.25" travel per revolution across its 3-foot fully threaded length. The component meets ASTM A108 manufacturing specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory compliance for industrial applications worldwide.