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The VALUE COLLECTION MPRI02500500-100BX is a 1/4-20 UNC machine screw with a round head and Phillips drive. Made from Grade 2 steel with a zinc-plated finish, this fastener measures 1/2 inch in length under head. It is sold in a box of 100. These screws are a standard choice for general-purpose mechanical assembly, enclosure work, and light structural fastening across HVAC, electrical, and plumbing applications. The zinc coating provides basic corrosion resistance for indoor and sheltered installations. Grade 2 steel meets common commercial fastener requirements for non-critical load applications.
These 1/4-20 Phillips round head machine screws are suited for attaching panels, brackets, junction boxes, and equipment covers in residential and light commercial work. The Phillips drive is compatible with standard bit sets carried by most service technicians. The UNC thread form is the most common inch-series thread used in North American trade applications, making these screws interchangeable with standard 1/4-20 hardware throughout the field.
Designed as a standard 1/4-20 UNC inch-series machine screw suitable for general mechanical assembly, panel mounting, and equipment fastening in residential and light commercial trade work.
Install using a standard No. 2 Phillips bit driver. Ensure the mating tapped hole or nut is clean and free of debris before driving. Do not overtighten, as Grade 2 steel has lower tensile strength than higher-grade fasteners and is not rated for high-torque structural applications. Power down or de-energize any equipment before accessing panels or enclosures where these screws are used.
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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