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The VALUE COLLECTION 91804 is a heavy hex nut threaded to 1/2-13 UNC specifications and manufactured from brass with a right-hand thread direction. Heavy hex nuts feature a larger across-flats dimension and greater height than standard hex nuts, providing increased bearing surface and resistance to loosening under vibration or torque. At 7/8 inches across the flats and 1/2 inch high, this nut is suited for fastening applications where a beefier profile is required. Brass construction offers corrosion resistance and compatibility with copper and brass fittings commonly found in plumbing, HVAC, and electrical enclosure work. This package contains 50 nuts.
These heavy hex nuts are used across residential and light commercial applications wherever a 1/2-13 UNC threaded fastener connection is required. Common install scenarios include pipe flange assemblies, valve body connections, equipment mounting, and general mechanical fastening where brass is specified to avoid galvanic corrosion or to meet system material requirements. Licensed plumbers, HVAC technicians, and electricians all encounter this fastener type during equipment installation and service work.
Designed as a standard replacement or stocking fastener for any application requiring a 1/2-13 UNC heavy hex nut in brass. Verify thread engagement length and bearing surface requirements against the specific joint design before installation.
Heavy hex nuts of this size are typically installed and removed using a 7/8-inch wrench or socket. De-energize, depressurize, or shut off any system before loosening or tightening fasteners on live assemblies. Follow applicable code references such as IFGC or IPC for torque and joint integrity requirements on threaded pipe connections. Do not mix brass fasteners with ferrous hardware in environments where galvanic corrosion is a concern.
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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