S-93410A444 3/4"-5 x 3 ft. ASTM A193 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 125,000 psi tensile strength, ensuring reliable performance in demanding industrial applications.
• Superior wear resistance and durability due to Rockwell C35 hardness and ASTM Grade B7 alloy steel construction, extending service life.
• Precise motion control with 0.2" travel per turn and ACME thread profile, providing accurate linear movement for automation systems.
• Reliable left-hand thread engagement with Class 2G thread fit, offering consistent performance in reverse-motion or specialized assembly setups.
• Full-length threading allows for maximum nut travel along the entire 3 ft. length, enhancing design flexibility.
• Compliance with stringent industry standards including ASTM A193, ensuring material quality and performance consistency.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances.

Professional Applications & Engineering Value

This 3/4"-5 ACME left-hand thread lead screw is engineered to address critical challenges in precision motion control and heavy-duty linear actuation systems. The ASTM Grade B7 alloy steel construction, combined with the ACME thread form, provides high mechanical strength and efficient power transmission, reducing the risk of thread stripping under high loads. The left-hand threading is particularly valuable in applications requiring reverse motion or where standard right-hand threads could loosen, such as in clamping mechanisms, industrial presses, and automated positioning equipment. Its 0.2" travel per turn ensures predictable linear displacement, making it ideal for CNC machinery, material handling systems, and other industrial lead screw applications where accuracy and repeatability are paramount. The fully threaded design allows for continuous adjustment, solving space constraints and enhancing operational efficiency in compact assemblies.

Specification Summary & Compliance

This lead screw adheres to precise dimensional and performance standards, including Class 2G thread fit for consistent engagement and ACME 3/4"-5 thread size. It is manufactured in compliance with ASTM A193 for material specifications, ensuring reliability in high-stress environments. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, confirming its suitability for use in regulated industries without hazardous substance restrictions.