S-98940A741 1"-4 x 3 ft. Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional Accuracy: Maintains ±0.009" per foot travel distance for reliable, repeatable positioning in precision motion control systems.
• High-Strength Durability: Made from hardened 4140 alloy steel with a tensile strength of 125,000 psi, ensuring long service life under heavy loads.
• Superior Wear Resistance: Black-oxide surface treatment and Brinell 271 hardness provide excellent corrosion resistance and reduced wear in industrial environments.
• Consistent Motion Transfer: 0.25" travel per turn with a single-start, fully threaded Acme design delivers smooth, predictable linear movement.
• Broad Compatibility: Class 2C thread fit allows for easy assembly with standard nuts, reducing installation time and costs.
• Left-Hand Thread Flexibility: Enables unique mechanical configurations and reverse motion applications where standard right-hand threads are unsuitable.
• Environmental Compliance: RoHS 3 compliant, meeting strict environmental regulations for use in global markets.

Professional Applications & Engineering Value

This left hand Acme lead screw is engineered to solve critical challenges in industrial automation and precision machinery. The hardened Black-Oxide 4140 alloy steel construction provides exceptional strength and corrosion resistance, minimizing downtime in harsh operating conditions. Its Class 2C thread fit and single-start Acme threading ensure reliable engagement with mating components, reducing backlash and improving positional accuracy in CNC systems, lifting equipment, and conveyor mechanisms. The ±0.009" per foot accuracy and consistent 0.25" travel per turn make it ideal for applications requiring precise linear motion control, such as packaging machinery, 3D printers, and medical devices, where repeatability and durability are paramount.

Specification Summary & Compliance

This lead screw features a 1"-4 Acme thread with Class 2C fit for standard industrial tolerance, ensuring compatibility with common nut assemblies. Manufactured from hardened 4140 alloy steel with a tensile strength of 125,000 psi and Brinell 271 hardness, it meets rigorous performance standards. The product is fully compliant with RoHS 3 (2015/863/EU) environmental regulations, guaranteeing safe use in regulated industries.