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The VALUE COLLECTION 31257 is a 1/4-28 hex nut made from steel with a zinc-plated finish, designed for use in threaded fastening applications across a wide range of mechanical assemblies. It carries a 2B thread fit class per ANSI ASME B18.6.3, which specifies a standard internal thread tolerance appropriate for general-purpose fastening. The right-hand thread direction and fine-pitch 1/4-28 designation make it suitable for joints requiring higher thread engagement and vibration resistance compared to coarse-pitch equivalents. Weighing approximately 0.005 pounds per unit, this nut is installed by millwrights, maintenance technicians, HVAC mechanics, electricians, and plumbers wherever a standard fine-thread hex nut is called for.
This hex nut is used in residential and commercial mechanical, electrical, and plumbing installations as well as light industrial equipment assembly and maintenance. The fine-thread 1/4-28 profile is commonly found in applications requiring secure fastening in thin-walled materials or where precise torque control is needed. The zinc-plated finish provides a basic level of corrosion resistance for indoor and sheltered outdoor use. This part is sold individually but must be ordered in a minimum quantity of 100 units per order.
Designed as a general-purpose 1/4-28 fine-thread hex nut suitable for use with any male-threaded fastener or stud conforming to the UN thread standard at 1/4-28 with a 2A or compatible thread fit class.
Installation requires a standard 7/16-inch hex wrench or socket driver. Ensure the mating bolt or stud is clean and free of debris before threading the nut by hand to confirm correct engagement. Power down or de-energize any associated equipment before servicing fastened assemblies in electrical or mechanical panels. Follow applicable codes and equipment manufacturer torque guidelines for the specific joint application.
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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