S-95155A367 1 1/2"-4 ASTM B16 Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 360 Brass construction, ideal for harsh industrial environments and reducing maintenance needs
• Precise linear motion control with 0.25" travel per turn, ensuring accurate positioning and repeatability in automated systems
• Reliable left-hand thread engagement for specialized applications requiring reverse-direction movement or locking mechanisms
• Consistent performance guaranteed by Class 2G thread fit, providing optimal clearance and smooth operation with mating screws
• Easy installation and adjustment thanks to the standard hex nut design, allowing for straightforward wrench access and secure fastening
• Enhanced durability with Rockwell B75 hardness, offering excellent wear resistance and long service life under cyclic loads
• Compliance with ASTM B16 standards ensures material quality and dimensional consistency for reliable integration into lead screw assemblies

Professional Applications & Engineering Value

This 1 1/2"-4 Left Hand Acme Thread Brass Hex Nut delivers exceptional engineering value in precision motion systems. Crafted from 360 Brass, it provides inherent corrosion resistance, making it suitable for environments exposed to moisture, chemicals, or outdoor elements where steel components may fail. The Acme thread form and left-hand thread direction are critical for applications requiring counter-clockwise actuation, such as in clamping devices, valve controls, or specialized machinery where reverse threading prevents unintentional loosening. With a 0.25" travel per turn, it ensures fine control in linear actuators and positioning tables, reducing backlash and improving accuracy. The Class 2G thread fit offers the ideal balance between ease of assembly and minimal play, addressing common issues like jamming or excessive wear in high-cycle operations. This nut is a reliable lead screw component for industries like packaging, automation, and medical equipment, where consistent performance and material integrity are paramount.

Specification Summary & Compliance

This Acme nut features a 1 1/2"-4 left-hand Acme thread with Class 2G thread fit per standard inch-based tolerances, ensuring dimensional accuracy and compatibility with corresponding screws. It is manufactured from 360 Brass in accordance with ASTM B16 specifications for free-cutting brass rod, bar, and shapes, which governs material composition and mechanical properties. The nut has a hardness of Rockwell B75 and includes a standard hex design for easy installation. While thrust load capacity is not rated, the product is designed for general-purpose use in Acme lead screw assemblies and complies with industry standards for material quality and performance.