Keystone Threaded Products US016AG1A002540 Hex Nut

Product Description

The KEYSTONE THREADED PRODUCTS US016AG1A002540 is a 1-4 Acme thread hex nut machined from Grade 303 stainless steel. It features a right-hand thread with a 2G fit class, making it suitable for moderate-tolerance power transmission and linear motion applications. The nut measures 1.625 inches across flats and 63/64 inches in height. At 0.425 pounds, it offers solid mass for a secure, vibration-resistant connection. Grade 303 stainless provides good corrosion resistance and machinability, suitable for environments where rust resistance and ease of assembly are priorities. Mechanical contractors, maintenance technicians, and fabricators working with Acme-threaded rod or lead screw assemblies are the primary installers.

This hex nut is intended for use with 1-4 Acme-threaded rod, lead screws, or jack screw assemblies in both industrial and commercial settings. Acme thread forms are commonly found in linear actuators, machine slides, vises, and valve stem assemblies. The 2G thread fit class indicates a general-purpose commercial tolerance suitable for typical power transmission use. Grade 303 stainless steel construction makes this nut a practical choice in wet, corrosive, or food-adjacent environments where carbon steel hardware would be inappropriate.

Key Features

• 1-4 Acme thread form with right-hand thread direction
• Grade 303 stainless steel for corrosion resistance and machinability
• 2G thread fit class for general-purpose commercial tolerance applications
• 1.625 inches across flats for standard hex wrench or socket engagement
• 63/64 inches height provides adequate thread engagement depth
• Does not meet military specifications - commercial-grade application only

Compatibility

Designed for use with 1-4 Acme-threaded rod and lead screw assemblies requiring a right-hand, 2G fit class hex nut in Grade 303 stainless steel.

Installation Notes

Installation is typically performed by mechanical technicians or millwrights using standard hex wrenches or sockets sized to 1.625 inches across flats. Confirm mating thread standard is Acme and fit class is compatible with 2G tolerance before assembly. Do not cross-thread - start the nut by hand to verify engagement before applying torque. In corrosive environments, inspect threads for contamination or damage before installation to ensure proper fit and load transfer.