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The KEYSTONE THREADED PRODUCTS UM005AG1A000775 is a steel hex nut designed for use with 5/16-14 Acme threaded fastener assemblies. Manufactured from 1215/12L14 free-machining steel, this nut offers consistent dimensional accuracy and reliable thread engagement in light-duty mechanical applications. It features a right-hand thread direction and a 2G thread fit class, which provides a standard working clearance suitable for general-purpose Acme thread assemblies. The 9/16-inch across-flats dimension accepts a standard wrench for installation and removal. Weighing approximately 0.017 pounds, it is a compact, single-piece fastener sold individually.
This hex nut is suited for use in mechanical assemblies, jigs, fixtures, lead screw applications, and other setups that use Acme-profile threaded rods or shafts. The 5/16-14 Acme thread specification is commonly found in light machinery, positioning equipment, and fabricated assemblies across manufacturing and industrial maintenance environments. Installers in machine shops, industrial facilities, and general fabrication settings will find this nut appropriate for standard Acme thread engagement tasks where military-specification hardware is not required.
Designed for use with 5/16-14 Acme threaded rods, shafts, or studs in commercial and industrial mechanical assemblies requiring a 2G thread fit class.
Installation of this hex nut should be performed by a qualified mechanic or maintenance technician using a wrench sized to the 9/16-inch across-flats dimension. Verify that the mating Acme threaded component matches the 5/16-14 thread size and right-hand direction before assembly. Do not mix thread standards - Acme thread profile is not interchangeable with Unified National (UN) or other thread forms. Inspect the nut and mating thread for damage or contamination before installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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