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The VALUE COLLECTION MHWI-1200500US-100BX is a 12-24 x 1/2 inch hex head machine screw built for general fastening in metal fabrication, equipment assembly, and maintenance applications. Made from Grade 2 steel with a zinc-plated finish, it delivers reliable corrosion resistance for indoor and light-duty outdoor use. The hex head accepts a standard hex wrench or socket driver, and the unified national coarse (UNC) thread pattern provides solid engagement in tapped holes. Length is measured under the head at 1/2 inch. Sold in a box of 100, this screw is a practical choice for tradespeople who need consistent hardware in quantity.
This fastener is suited for residential and commercial mechanical, electrical, and plumbing work where a 12-24 UNC thread is required. Common applications include panel assembly, equipment mounting, junction box hardware, and general sheet metal or structural attachment where a wrench-driven hex head is preferred over a slotted or Phillips drive. The zinc plating makes it appropriate for dry or low-humidity environments. Each box contains 100 screws, supporting both job-site use and shop stock.
Designed as a standard 12-24 UNC general-purpose machine screw compatible with any tapped hole or nut conforming to the 12-24 unified national coarse thread standard.
Installation is typically performed by electricians, HVAC technicians, plumbers, or general maintenance trades using a hex socket, nut driver, or hex key. Always ensure the mating hole is properly tapped or that a compatible nut is used before driving the screw. De-energize or lock out equipment before fastening hardware near electrical components or live systems. Do not over-drive; seat the screw snug and apply appropriate torque for the application material.
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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