S-99030A987 3/8"-8 x 18" Fast-Travel Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional Fast-Travel Performance – Achieves 0.5" travel per turn with a 4:1 speed ratio, significantly reducing cycle times in automated systems.
• High-Accuracy Positioning – Maintains ±0.009" per foot travel distance accuracy for reliable, repeatable motion control in precision applications.
• Durable 1018 Carbon Steel Construction – Provides excellent strength and wear resistance for long service life in demanding industrial environments.
• Optimized 4-Start ACME Thread Design – Delivers smooth, efficient power transmission with reduced friction compared to single-start alternatives.
• Class 2C Thread Fit Compatibility – Ensures proper engagement with standard ACME nuts while allowing for thermal expansion and manufacturing tolerances.
• Fully Threaded 18" Length – Offers maximum flexibility for various mounting configurations and travel requirements.
• Environmental Compliance Ready – Meets RoHS 3 and REACH standards for use in regulated industries and global markets.

Professional Applications & Engineering Value

This 3/8-8 ACME 4-start lead screw delivers exceptional engineering value in fast-travel applications where speed and precision are critical. The combination of four thread starts and ACME thread profile provides significantly higher travel rates than standard single-start screws, making it ideal for automated positioning systems, CNC equipment, and material handling applications. Manufactured from 1018 carbon steel, this fully threaded component maintains dimensional stability under load while the Class 2C thread fit ensures reliable performance across temperature variations. The right-hand threading and 0.5" travel per turn capability enable rapid linear motion conversion with minimal backlash, solving common speed limitations in industrial automation while maintaining the ±0.009" per foot accuracy required for precision manufacturing processes.

Specification Summary & Compliance

This precision lead screw features 3/8-8 ACME threading with Class 2C thread fit tolerances, ensuring proper engagement with standard ACME nuts. The component delivers 0.5" travel distance per turn with ±0.009" per foot accuracy for precise positioning applications. Manufactured to industry standards for ACME thread forms, this fully threaded 18-inch component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use in regulated industries and international markets.