Keystone Threaded Products NG008AC2F002562 Precision Acme Nut

Product Description

The KEYSTONE THREADED PRODUCTS NG008AC2F002562 is a machinable round precision Acme nut manufactured from gray iron. It features a left-hand 1/2 in - 8 thread with a 2C class of fit and two thread starts, making it suited for power transmission applications where controlled axial movement and backlash management are required. The nut stands 1 inch high with an overall diameter of 1.465 inches. The machinable gray iron construction allows secondary machining operations to meet tight bore, flange, or mounting tolerances in the finished assembly. Machinists, tool and die makers, and mechanical assembly technicians typically source and install this component.

This precision Acme nut is used in linear motion assemblies, lead screw mechanisms, machine tool slides, and industrial positioning equipment. The left-hand thread direction is specified where the application demands reverse-rotation drive or where paired with a left-hand lead screw to prevent back-driving. The 2C fit class provides a looser clearance appropriate for assemblies where free movement under load is prioritized over zero-backlash positioning. The two-start thread geometry increases linear travel per revolution, which is useful in actuator and feed screw designs where faster traverse speed is needed.

Key Features

• Left-hand 1/2 in - 8 Acme thread with two thread starts for increased lead per revolution
• 2C class of fit provides controlled clearance for smooth linear travel under load
• Machinable gray iron allows secondary operations for custom bore or flange configurations
• 1 inch height and 1.465 inch overall diameter suit compact lead screw assemblies
• Manufactured to ISO 9001:2019 quality standards

Compatibility

Designed for use with left-hand Acme lead screws of 1/2 in - 8 thread form in industrial linear motion, machine tool, and positioning assemblies requiring a 2C fit class.

Installation Notes

Installation is typically performed by machinists or mechanical assembly technicians. Before installation, verify that the mating lead screw is a left-hand 1/2 in - 8 Acme thread to prevent cross-threading or assembly errors. Complete any secondary machining operations on the nut prior to final assembly. Ensure mating surfaces are clean and free of burrs, and confirm thread engagement length is sufficient for the applied load in the final assembly design.