S-98935A549 1 1/2"-4 x 3 ft. ASTM A108 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Precise Linear Motion Control: Delivers consistent 0.25" travel per turn for accurate positioning in automated systems.
• Exceptional Strength & Durability: Grade 2 carbon steel construction with 53,000 psi tensile strength withstands heavy loads and repetitive use.
• Superior Wear Resistance: Rockwell B61 hardness ensures long service life in high-friction industrial environments.
• Reliable Thread Engagement: Class 2G thread fit provides optimal clearance for smooth operation with minimal backlash.
• Left-Hand Thread Versatility: Enables unique mechanical configurations and reverse motion applications where standard threads are unsuitable.
• Industry Standard Compliance: Manufactured to ASTM A108 specifications for guaranteed dimensional accuracy and performance.
• Environmental Responsibility: RoHS 3 and REACH compliant for safe use in regulated industries worldwide.

Professional Applications & Engineering Value

This ACME left-hand thread lead screw solves critical engineering challenges in precision linear motion systems where reverse threading or specific mechanical advantage is required. The Grade 2 carbon steel construction provides the ideal balance of strength and machinability, while the fully threaded design allows for continuous engagement along the entire 3-foot length. The ACME thread profile offers superior load distribution compared to standard V-threads, making it ideal for industrial applications requiring high thrust capabilities with minimal friction. Engineers specify this component for precision positioning equipment, clamping mechanisms, and automated machinery where the left-hand threading provides unique solutions for complex motion control requirements. The combination of 0.25" travel per turn and Class 2G thread fit ensures predictable performance in demanding manufacturing environments.

Specification Summary & Compliance

This lead screw features 1 1/2"-4 ACME left-hand threads with Class 2G thread fit tolerance, ensuring proper clearance for smooth operation. Manufactured from Grade 2 carbon steel with 53,000 psi tensile strength and Rockwell B61 hardness. The product fully complies with ASTM A108 specifications for material properties and dimensional accuracy. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, making it suitable for global industrial applications requiring verified material safety and performance reliability.