S-98940A405 2"-4 x 18" Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Enhanced Durability: Hardened 4140 alloy steel construction with black-oxide coating resists corrosion and wear, extending service life in demanding industrial environments.
• Superior Load Handling: High tensile strength of 125,000 psi ensures reliable performance under heavy loads without deformation or failure.
• Precision Movement Control: ±0.009" per foot travel accuracy guarantees consistent positioning for applications requiring exact linear motion.
• Optimized Thread Design: Class 2C Acme thread fit provides smooth engagement with nuts, reducing backlash and improving operational efficiency.
• Robust Material Hardness: Brinell 271 hardness offers excellent resistance to surface indentation and abrasion during continuous use.
• Standardized Compatibility: Right-hand, fully threaded 2"-4 ACME design ensures easy integration with existing industrial systems and components.
• Environmental Compliance: RoHS 3 (2015/863/EU) compliance meets global regulatory standards for safe and sustainable manufacturing.

Professional Applications & Engineering Value

This precision ACME lead screw is engineered to address critical challenges in industrial automation, CNC machinery, and linear motion systems. The black-oxide 4140 alloy steel material, combined with hardening treatment, provides exceptional resistance to mechanical stress and environmental factors, reducing maintenance frequency and downtime. The ACME thread with Class 2C fit ensures minimal play and reliable torque transmission, essential for applications requiring repeatable accuracy such as positioning tables, actuators, and lifting mechanisms. With a consistent 0.25" travel per turn and tight tolerance of ±0.009" per foot, it delivers predictable linear movement, enhancing the precision of assembly lines and robotic systems. This screw is ideal for B2B users seeking high-strength, long-lasting components that maintain performance under continuous operational demands.

Specification Summary & Compliance

This lead screw adheres to inch system measurements with a Class 2C thread fit for Acme threading, ensuring dimensional accuracy and compatibility with standard nuts. It features a fully threaded, right-hand design with a travel distance of 0.25" per turn and an accuracy of ±0.009" per foot. Manufactured from hardened 4140 alloy steel with a black-oxide finish, it meets industry standards for strength and durability. The product is RoHS 3 (2015/863/EU) compliant, confirming adherence to environmental regulations for hazardous substance restrictions.