S-93410A544 1 3/8"-4 x 3 ft. ASTM A193 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity: With a tensile strength of 125,000 psi, this lead screw reliably handles heavy-duty applications without deformation or failure.
• Superior Wear Resistance: The Rockwell C35 hardness of the ASTM Grade B7 alloy steel ensures long-lasting performance and reduced maintenance in high-cycle operations.
• Precise Motion Control: The 0.25" travel distance per turn and Class 2G thread fit provide accurate and repeatable linear movement for demanding industrial systems.
• Reliable Reverse Operation: The left-hand ACME thread design allows for secure counter-clockwise motion, ideal for specialized machinery requiring reverse direction control.
• Broad Industrial Compatibility: Fully threaded 3 ft. length and standardized 1 3/8"-4 ACME thread ensure easy integration into existing motion control setups.
• Enhanced Safety and Compliance: Meets ASTM A193, RoHS 3, and REACH standards, guaranteeing material safety and regulatory adherence for global industrial use.
• Optimized for High-Stress Environments: The combination of alloy steel construction and ACME thread geometry delivers smooth operation under continuous heavy loads.

Professional Applications & Engineering Value

This 1 3/8"-4 ACME left-hand thread lead screw is engineered to address critical challenges in precision motion control systems. Its ASTM Grade B7 alloy steel construction provides exceptional strength and durability, preventing thread wear and elongation in high-load applications such as industrial presses, CNC machinery, and automated positioning systems. The left-hand threading offers unique advantages in assemblies requiring reverse directional movement, enhancing safety and operational flexibility. With a 0.25" travel per turn and Class 2G thread fit, it ensures minimal backlash and consistent performance in repetitive motion tasks. Fully compliant with ASTM A193 and environmental regulations, this screw is ideal for engineers seeking reliable, long-term solutions in heavy-duty manufacturing and automation environments.

Specification Summary & Compliance

This lead screw features a 1 3/8"-4 ACME thread with Class 2G fit for precise tolerance and smooth operation. It is manufactured from ASTM Grade B7 alloy steel with a tensile strength of 125,000 psi and Rockwell C35 hardness. The product complies with ASTM A193 specifications for high-temperature service and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to strict environmental and safety standards for industrial use worldwide.