Keystone Threaded Products UM010AG1F001560 Hex Nut

Product Description

The KEYSTONE THREADED PRODUCTS UM010AG1F001560 is a left-hand Acme thread hex nut machined from steel. It is designed for 5/8-8 Acme threaded rod or lead screw applications where a left-hand thread direction is required to resist loosening under rotational loads or to serve as part of a counter-threaded assembly. The nut meets a 2G thread fit class, indicating a general-purpose tolerance suitable for most mechanical and industrial applications. Width across flats measures 1-1/16 inches and height is 39/64 inches. This fastener is installed by machinists, millwrights, and maintenance technicians working on linear motion systems, machine tools, conveyors, and industrial equipment.

Left-hand Acme hex nuts are used in applications where counter-rotation or bidirectional motion requires a left-hand thread to prevent self-loosening. Common install scenarios include lead screw assemblies, jack screws, vises, and actuator mechanisms in commercial and industrial equipment. This nut is not a standard hardware-store item and is specifically selected when a 5/8-8 Acme left-hand thread is called out in a mechanical design or replacement specification. It is sold individually with a minimum order quantity of one.

Key Features

• Left-hand Acme thread prevents loosening in counter-rotating or bidirectional load applications
• 5/8-8 Acme thread form provides coarse pitch for efficient linear motion and load transfer
• 2G thread fit class suits general-purpose mechanical assemblies
• Steel construction provides strength and durability in industrial environments
• 1-1/16 inches across flats accepts standard open-end or box-end wrenches
• Height of 39/64 inches provides adequate thread engagement for typical load requirements

Compatibility

Designed as a left-hand Acme thread hex nut for use with 5/8-8 Acme threaded rod, lead screws, or mating fasteners requiring a left-hand thread direction in industrial and mechanical assemblies.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with Acme thread fasteners and left-hand thread engagement. Confirm left-hand thread direction before installation, as forcing a left-hand nut onto a right-hand thread will cause immediate galling and damage to both components. Use an appropriate open-end or box-end wrench sized for 1-1/16 inches across flats. De-energize and lock out any equipment before servicing lead screw or actuator assemblies per applicable OSHA lockout/tagout procedures.