Keystone Threaded Products NG012AC1F003865 Precision Acme Nut

Product Description

The KEYSTONE THREADED PRODUCTS NG012AC1F003865 is a machinable round precision Acme nut manufactured from gray iron. It features a left-hand thread direction and meets a 2C Class of Fit, making it suitable for precision linear motion and power transmission applications. Standing 1.5 inches high with an overall diameter of 2.235 inches, this nut is designed for applications where dimensional accuracy and thread integrity are critical. Gray iron construction provides good compressive strength and machinability. The single-start left-hand thread configuration is intended for assemblies where reverse-thread orientation is required. Machinists, mechanical assemblers, and maintenance technicians working on lead screw or Acme thread drive systems are the primary installers of this component.

This precision Acme nut is used in industrial machinery, linear actuators, lead screw assemblies, and mechanical drive systems that require left-hand thread engagement. The 2C Class of Fit indicates a standard precision grade appropriate for general-purpose power transmission where moderate backlash is acceptable. The machinable design allows end-users to bore, face, or modify the nut to meet specific housing or flange requirements before final installation. It is suited for both OEM manufacturing applications and MRO replacement scenarios across light and medium industrial environments.

Key Features

• Left-hand single-start Acme thread for reverse-orientation drive assemblies
• 2C Class of Fit for general-purpose precision power transmission
• Gray iron construction offers good machinability and compressive strength
• Machinable round body allows custom boring or facing to fit specific housings
• Overall diameter of 2.235 inches with a height of 1.5 inches

Compatibility

Designed as an OEM-style or MRO replacement precision Acme nut for left-hand lead screw drive assemblies requiring a 2C Class of Fit and a machinable gray iron round nut body.

Installation Notes

Installation is typically performed by machinists or mechanical maintenance technicians. Before servicing any lead screw assembly, de-energize and lock out the associated drive system per applicable LOTO procedures. The machinable body should be finished to final dimensions before threading onto the lead screw. Verify left-hand thread engagement direction before assembly to avoid cross-threading or mismatch with the mating screw.