Keystone Threaded Products UM016AG1A002550 Acme Hex Nut

Product Description

The KEYSTONE THREADED PRODUCTS UM016AG1A002550 is a 1-6 Acme hex nut machined from 1215 and 12L14 grade steel. It is designed for use in threaded mechanical assemblies where Acme thread forms are specified, including lead screw systems, linear actuators, and industrial power transmission applications. The nut features a right-hand thread direction, a 2G fit class for standard Acme tolerance, and a width across flats of 1.625 inches, making it compatible with standard wrench sizing for that dimension. Machinists, maintenance technicians, and industrial assembly professionals typically install this fastener.

This nut is suited for industrial and commercial mechanical applications that rely on Acme thread profiles. Acme threads are commonly used in motion control assemblies, clamps, vises, and machine tool slides where a trapezoidal thread form provides efficient load transfer and ease of engagement. The 2G fit class indicates a standard-tolerance external and internal thread pairing appropriate for general-purpose power transmission use. This part is sold and packaged individually.

Key Features

• Acme thread form, 1-6 thread size for power transmission and linear motion applications
• Right-hand thread direction for standard installation orientation
• 2G fit class providing standard Acme thread tolerance for general-purpose use
• 1215 and 12L14 steel construction for good machinability and adequate mechanical strength
• 1.625 inches width across flats, compatible with standard hex wrench tooling
• Height of 0.9844 inches for consistent bearing surface engagement

Compatibility

Designed as an OEM-style replacement or direct-use fastener for mechanical assemblies specifying a 1-6 Acme thread, 2G fit class, with a hex nut configuration in 1215 or 12L14 steel.

Installation Notes

Installation of Acme hex nuts is typically performed by machinists, millwrights, or mechanical maintenance technicians. Ensure the mating lead screw or threaded rod is clean and free of burrs before threading the nut into position. Use an appropriately sized hex wrench or open-end wrench sized for 1.625 inches across flats to seat the nut to the required torque per the equipment manufacturer specifications. Do not overtighten, as 1215 and 12L14 steel, while machinable, have lower tensile strength than higher-grade fastener steels and are not rated for high-stress structural applications.