S-98935A785 2 1/2"-4 x 12" ASTM A108 Acme Lead Screws and Nuts
Acme Lead Screws and Nuts
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Basic Information
Thread Parameters
Dimension Parameters
Lead Screw Specific Parameters
Load & Performance Parameters
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Key Features & Benefits at a Glance
- Precise 0.25" travel per turn enables accurate positioning and repeatable motion control in automated systems
- Grade 2 carbon steel construction provides excellent strength-to-weight ratio with 64,000 psi tensile strength for demanding applications
- Class 2G thread fit ensures smooth operation with proper clearance for reduced friction and extended service life
- Rockwell B61 hardness rating delivers superior wear resistance and durability under continuous operation
- Right-hand ACME threading offers reliable power transmission with standard direction compatibility
- Fully threaded 12" length provides maximum engagement flexibility for various mounting configurations
- ASTM A108 compliance guarantees consistent quality and material properties meeting industrial standards
Professional Applications & Engineering Value
This 2 1/2"-4 ACME lead screw delivers exceptional performance in precision motion control systems where reliability and accuracy are paramount. Engineered from Grade 2 carbon steel, it withstands substantial axial loads while maintaining dimensional stability. The ACME thread form provides efficient power transmission with reduced backlash, making it ideal for CNC machinery, linear actuators, and industrial automation equipment. The 0.25" travel per turn enables fine positioning control, while the Class 2G thread fit ensures smooth operation without binding. This fully threaded lead screw offers installation versatility across various industrial applications requiring precise linear movement and load handling capabilities.
Specification Summary & Compliance
This precision ACME lead screw features 2 1/2"-4 thread size with Class 2G thread fit tolerance for optimal performance. Manufactured to ASTM A108 specifications, it delivers consistent mechanical properties including 64,000 psi tensile strength and Rockwell B61 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across regulated industries. The right-hand threaded, fully threaded design maintains dimensional accuracy throughout the 12" length for reliable integration into industrial motion systems.
