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The VALUE COLLECTION MP31211 is a 1/4-28 UN steel hex nut designed for threaded fastening applications requiring a fine-pitch right-hand thread. Measuring 7/16 inches across the flats and 7/32 inches in height, this nut fits standard 1/4-28 UN threaded fasteners and is finished in zinc clear coat to provide basic corrosion resistance. It is manufactured from steel for reliable mechanical strength in general-purpose fastening. Licensed tradespeople, maintenance technicians, and assembly professionals working across HVAC, plumbing, and electrical installations commonly use hex nuts of this specification when securing components to threaded rod, bolts, or machine screws.
This hex nut is suited for light-duty to medium-duty fastening tasks in residential and commercial settings. Its 1/4-28 UN fine thread designation makes it appropriate for applications where vibration resistance or precise thread engagement is needed over coarser thread alternatives. The zinc clear finish makes it suitable for indoor and light-exposure environments where minimal corrosion protection is required. It is sold individually per package, with a minimum order quantity of 50 pieces.
Designed as an OEM-style replacement and general-use hex nut compatible with 1/4-28 UN externally threaded fasteners including bolts, machine screws, and threaded rod of the same thread specification.
Installation should be performed by a qualified technician or mechanic using an appropriate 7/16-inch wrench or socket. Always ensure the mating threaded fastener matches the 1/4-28 UN thread specification before installation to prevent cross-threading. De-energize or shut off any relevant system before accessing fastener locations on live equipment. Do not overtighten, as this can strip the fine thread or deform the nut.
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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