S-98980A004 3/8"-12 x 3 ft. Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional Dimensional Stability: Maintains precise positioning with ±0.009" per foot travel accuracy, ensuring reliable and repeatable motion control in automated systems.
• Superior Corrosion Resistance: Constructed from 304 Stainless Steel, offering excellent durability and long service life in harsh or washdown environments.
• Optimized Load-Bearing Capacity: High 72,000 psi tensile strength and Brinell 150 hardness provide robust performance for demanding linear motion applications.
• Precision Thread Engagement: Class 2C thread fit ensures smooth, low-friction operation with minimal backlash when paired with a matching Acme nut.
• Left-Hand Threading for Specialized Motion: Enables counter-clockwise advancement for unique assembly, clamping, or positioning requirements not met by standard right-hand threads.
• Consistent Drive Performance: 1:1 speed ratio and single-start thread deliver predictable, straightforward linear movement per revolution.
• Global Compliance and Safety: Meets RoHS 3 (2015/863/EU) directives, ensuring the lead screw is free from hazardous substances for use in regulated markets.

Professional Applications & Engineering Value

This 3/8"-12 Left Hand Acme Lead Screw is engineered to solve critical challenges in precision linear motion systems. The 304 Stainless Steel construction resists corrosion from chemicals, moisture, and sterilization processes, making it ideal for food processing, medical device, and packaging machinery where hygiene and durability are paramount. The Acme thread type and Class 2C fit provide high load-carrying capacity with reduced wear, ensuring long-term accuracy in CNC positioning tables, valve actuators, and clamping fixtures. Its left-hand thread direction offers design flexibility for applications requiring reverse-thread engagement, such as in tandem drive systems or specialized jigs. The combination of ±0.009" per foot accuracy and 72,000 psi tensile strength guarantees reliable performance under continuous operational stress, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This precision Acme lead screw adheres to Inch system standards with a 3/8"-12 thread size and Class 2C thread fit for consistent, low-backlash performance. It is fully threaded with a left-hand thread direction, 0.083" travel distance per turn, and a 3 ft. length. Manufactured from 304 Stainless Steel with a Brinell 150 hardness and 72,000 psi tensile strength, it complies with RoHS 3 (2015/863/EU) environmental directives, ensuring suitability for global industrial and commercial use.