S-93410A650 1 1/4"-4 x 3 ft. ASTM A193 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Precise Motion Control: Achieve consistent 0.25" linear travel per revolution, ideal for applications requiring accurate positioning and repeatable movement.
• Exceptional Strength & Durability: Manufactured from ASTM Grade B7 alloy steel with a high tensile strength of 125,000 psi, ensuring reliable performance under heavy loads and in demanding environments.
• Superior Wear Resistance: A Rockwell C35 hardness rating provides excellent resistance to abrasion and extends the service life of the screw.
• Reliable Thread Engagement: The Class 2G thread fit offers optimal clearance for smooth operation with ACME nuts, reducing binding and ensuring consistent performance.
• Robust Industrial Design: The fully threaded, right-hand Acme thread design is engineered for efficient power transmission and high thrust capabilities in industrial machinery.
• Compliance with Rigorous Standards: Meets ASTM A193 specifications, guaranteeing material quality and manufacturing consistency for critical applications.
• Environmentally Conscious Manufacturing: Compliant with RoHS 3 and REACH regulations, making it a responsible choice for global supply chains.

Professional Applications & Engineering Value

This 1 1/4"-4 ACME lead screw is engineered to solve core challenges in precision motion control systems. Its ASTM Grade B7 alloy steel construction and Acme thread form are specifically chosen for applications requiring high thrust capacity and resistance to backlash, such as in CNC machinery, linear actuators, and heavy-duty positioning tables. The 0.25" travel per turn provides a predictable and efficient conversion of rotary to linear motion, which is critical for maintaining accuracy in automated processes. The combination of high tensile strength and Rockwell C35 hardness ensures that the screw can withstand continuous operation and shock loads, reducing downtime and maintenance costs. This makes it an indispensable component for engineers designing robust and reliable industrial systems.

Specification Summary & Compliance

This ACME lead screw features a 1 1/4"-4 thread size with a Class 2G thread fit and is fully threaded in a right-hand direction. It is manufactured from Alloy Steel to meet ASTM A193 specifications, with a material grade of ASTM Grade B7. The product is confirmed to be compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives.