Keystone Threaded Products UM020AG1A003040 Hex Nut

Product Description

The KEYSTONE THREADED PRODUCTS UM020AG1A003040 is a 1-1/4-4 Acme thread hex nut machined from 1215/12L14 free-machining steel. It carries a 2G thread fit class, which provides a standard running fit suitable for power transmission and linear motion applications. The nut measures 2 inches across the flats and 1-7/32 inches in height, weighing 0.786 pounds. Right-hand thread direction is standard. This fastener is intended for use in mechanical assemblies where Acme threaded rod or lead screw configurations are required, and it is installed by machinists, millwrights, and maintenance technicians working on industrial or commercial equipment.

Acme thread hex nuts in this size are commonly used in power transmission assemblies, linear actuators, jigs, fixtures, and general fabrication applications. The 1215/12L14 steel grade is a leaded, free-machining material that offers good surface finish and dimensional consistency from machined production runs. This nut is appropriate for moderate-load, non-corrosive environments where strength demands do not require higher-grade alloy or stainless materials. It does not meet military specifications. Typical installation settings include machine shops, fabrication facilities, and industrial maintenance environments.

Key Features

• 1-1/4-4 Acme thread form for use with Acme threaded rod or lead screws
• 2G thread fit class providing standard running clearance for power transmission use
• 1215/12L14 free-machining steel for consistent dimensional accuracy and surface finish
• 2 inches across flats for standard wrench engagement
• Right-hand thread direction, the industry standard for most mechanical assemblies
• Does not meet military specifications - suited for commercial and industrial applications

Compatibility

Designed for use with 1-1/4-4 Acme threaded rod, lead screws, and mating components specifying a 2G thread fit class in commercial and industrial mechanical assemblies.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a standard open-end or box wrench sized to the 2-inch across-flats dimension. Verify that the mating threaded component conforms to the Acme thread standard and 2G fit class before assembly. Inspect threads for burrs or contamination prior to engagement to avoid galling on the free-machining steel surface. Torque to values specified by the mechanical assembly drawing or applicable engineering standard, as no torque specification is provided with this part.