S-95270A171 2"-4 ASTM B16 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Enhanced Durability - Crafted from 360 brass with Rockwell B55 hardness for excellent wear resistance and long service life in demanding industrial environments.
• Precision Movement - Delivers a consistent 0.25" travel distance per turn, ensuring accurate and repeatable linear motion in automated systems.
• Superior Thread Engagement - Class 2G thread fit provides a free-running assembly with necessary clearance, reducing binding and enabling smoother operation.
• Reliable Material Performance - The 360 brass construction offers good machinability and natural corrosion resistance, minimizing maintenance needs.
• Standardized Compatibility - Manufactured to ASTM B16 specifications, guaranteeing material quality and dimensional consistency for reliable integration.
• Stable Square Design - The square nut profile prevents rotation during operation, offering secure fastening and easier installation in various assemblies.
• Optimized for Lead Screws - Features a single-start, right-hand Acme thread designed for efficient power transmission and load handling in lead screw mechanisms.

Professional Applications & Engineering Value

This 2"-4 ACME square nut is engineered to address common challenges in motion control systems, such as backlash, wear, and misalignment. The 360 brass material, combined with a Rockwell B55 hardness, provides an optimal balance between strength and ductility, resisting deformation under operational stresses. The Class 2G thread fit ensures minimal friction and smooth travel, which is critical for precision applications like CNC machinery, linear actuators, and positioning tables. Its single-start Acme thread design offers reliable power transmission with a consistent 0.25" travel per turn, making it ideal for setups requiring controlled, incremental movement. By complying with ASTM B16, this nut guarantees material integrity and performance, reducing downtime and maintenance costs in industrial automation and mechanical assemblies.

Specification Summary & Compliance

This component features a 2"-4 ACME thread with a Class 2G thread fit per standard inch-based threading practices, ensuring dimensional accuracy and compatibility. It is manufactured from 360 brass in accordance with ASTM B16 specifications, which govern free-cutting brass rod, bar, and shapes for screw machine applications. The nut is designed with a right-hand, single-start thread and provides 0.25" travel per turn. While thrust load capacity is not rated, the design and material selection support general industrial use. Compliance with industry standards like ASTM ensures reliability and interchangeability in lead screw and nut applications.