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The VALUE COLLECTION MP39333 is a partially threaded hex head cap screw designed for high-strength fastening applications in mechanical assembly, structural, and industrial maintenance work. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers superior tensile strength and corrosion resistance compared to lower-grade alternatives. The 5/16-24 thread specification follows the Unified National Fine (UNF) standard, providing tighter thread engagement and greater resistance to vibration loosening. Dimensioned at 5/16-24 x 2 inches under head, it conforms to ASME B18.2.1. This screw is typically installed by maintenance technicians, millwrights, and general contractors across a wide range of industrial and commercial applications.
This hex head cap screw suits applications where a high-clamp-load, fine-thread fastener is required. The partial threading design allows the unthreaded shank to bear shear loads, making it well suited for applications involving two-piece assemblies, brackets, and structural connections. The zinc yellow dichromate finish provides a recognizable visual indicator of Grade 8 specification and offers a layer of protection against corrosion in mildly harsh environments. Sold in packages of 25, this fastener is appropriate for both single-job use and general shop stock.
Designed as an OEM-style and general-purpose replacement or stock fastener for applications requiring a 5/16-24 UNF partially threaded hex head cap screw meeting ASME B18.2.1 dimensional specifications.
Install using a standard hex wrench or socket driver sized to the 5/16-inch head. Apply torque values per applicable engineering specifications for Grade 8 fasteners in the relevant material and joint type. Ensure mating threads are clean and free of debris before installation. Always confirm thread pitch compatibility before seating the fastener to avoid cross-threading damage.
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