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The Value Collection MSRI05001500-050BX is a 1/2-13 x 1.5-inch round head machine screw designed for general mechanical fastening in structural and assembly applications. Manufactured from alloy steel with a zinc plating finish, this screw delivers solid corrosion resistance in typical indoor and light industrial environments. The slotted drive accepts a standard flat-tip screwdriver, making it a straightforward choice for both installation and removal without specialized tooling. Thread size is 1/2-13 UNC (Unified National Coarse), measured as length under head. Sold in boxes of 50 units.
This machine screw is suited for use in mechanical assemblies, equipment fabrication, and general maintenance applications across commercial and industrial settings. Typical installations include fastening metal components, brackets, and structural hardware where a coarse-thread fastener with a low-profile round head is required. The zinc-plated alloy steel construction handles standard workshop and light-exposure environments. This fastener is installed by millwrights, maintenance technicians, pipefitters, and general tradespeople as part of larger assembly or repair work.
Designed as a standard 1/2-13 UNC round head slotted machine screw suitable for use wherever this thread size and head style are specified in mechanical assemblies and structural fastening applications.
Install using a standard flat-tip screwdriver or flat-bit driver sized to match the slotted head. Verify that the mating thread or nut is rated for 1/2-13 UNC before assembly. Do not overtighten, as alloy steel fasteners can strip or crack threaded holes in softer base materials. Follow applicable ASME or job-specification torque guidelines for the assembly class.
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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