S-91808A122 1 3/8"-4 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Enhanced Durability with Grade 2 Carbon Steel construction providing 64,000 psi tensile strength and Rockwell B85 hardness for long-lasting performance in demanding environments.
• Precise Motion Control offering 0.25" travel distance per turn for accurate positioning and smooth operation in automated systems.
• Reliable Left-Hand Threading ensures secure fastening in applications where reverse rotation is required to prevent loosening under vibration.
• Superior Thread Fit with Class 2G tolerance for consistent engagement and reduced backlash, improving overall system accuracy.
• Robust Hex Design allows for easy installation and removal with standard tools, minimizing downtime during maintenance.
• Environmental Compliance meets RoHS 3 and REACH standards, ensuring safe use in regulated industries without hazardous substances.
• Optimized for Heavy-Duty Use with Acme thread profile designed to handle high loads and repetitive motion without wear.

Professional Applications & Engineering Value

This left-hand Acme hex nut is engineered to address critical challenges in industrial machinery, such as preventing unintended disassembly in rotating equipment. Made from Grade 2 carbon steel, it resists deformation under stress, with a tensile strength of 64,000 psi and Rockwell B85 hardness ensuring reliability in high-load scenarios like linear actuators and presses. The Acme thread type and Class 2G fit provide smooth, low-friction movement, reducing wear and maintenance needs. Its 0.25" travel per turn enables precise adjustments in assembly lines and CNC systems, while the left-hand thread direction secures components where standard threads might loosen. Ideal for Acme lead screw setups, this nut delivers consistent performance in automotive, packaging, and material handling applications, enhancing operational safety and efficiency.

Specification Summary & Compliance

This nut adheres to Class 2G thread fit standards for precise dimensional accuracy, with a 1 3/8"-4 left-hand Acme thread size ensuring compatibility with corresponding screws. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from restricted substances. Manufactured from Grade 2 carbon steel, it maintains consistent mechanical properties, including the specified tensile strength and hardness, for reliable use in industrial fastening systems.