S-98940A649 1 1/4"-4 x 3 ft. Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Superior wear resistance from hardened 4140 alloy steel with Black-Oxide coating, extending service life in harsh industrial environments
• Exceptional positioning accuracy with ±0.009" per foot tolerance, ensuring reliable motion control in precision applications
• High load capacity with 125,000 psi tensile strength and Brinell 271 hardness for demanding mechanical operations
• Smooth, predictable movement with Class 2C thread fit providing optimal clearance for reduced friction and consistent performance
• Complete thread engagement with fully threaded right-hand ACME design for maximum force transmission and mounting flexibility
• Environmental compliance with RoHS 3 standards, meeting international safety regulations for industrial components
• Direct 1:1 motion transfer with single-start thread delivering precise 0.25" travel per revolution for accurate positioning

Professional Applications & Engineering Value

This precision ACME lead screw solves critical engineering challenges in industrial automation and motion control systems. The Black-Oxide 4140 alloy steel construction, combined with hardening treatment, provides exceptional resistance to wear and corrosion in demanding environments like CNC machinery, linear actuators, and positioning tables. The Class 2C thread fit offers optimal clearance for smooth operation while maintaining precise ±0.009" accuracy per foot, eliminating positioning errors in high-precision applications. With 125,000 psi tensile strength and fully threaded right-hand design, this component delivers reliable power transmission for heavy-duty industrial equipment, reducing maintenance downtime and ensuring consistent performance in continuous operation scenarios.

Specification Summary & Compliance

This inch-system ACME lead screw features Class 2C thread fit per industry standards, ensuring proper clearance for smooth operation. The component maintains ±0.009" travel distance accuracy per foot with 0.25" travel per turn. Manufactured from hardened 4140 alloy steel with Black-Oxide surface treatment, it meets RoHS 3 (2015/863/EU) compliance for environmental safety. The screw delivers 125,000 psi tensile strength and Brinell 271 hardness for demanding industrial applications requiring precision motion control and durability.