5/16″-18 X 5″ Machine Screws Round Head Slotted Drive Steel Zinc Plated (300/Pkg.) Factory Price

Machine Screws Slotted Round Zinc Plated 5/16-18 x 5 are precision fasteners designed for reliable assembly in metal enclosures, machinery, and electrical panels. With a slotted round head and a durable zinc plating, these screws deliver corrosion resistance and easy drive compatibility for standard tools.

Designed for 5/16 inch diameter and 18 threads per inch (5/16-18 UNC) with a nominal length of 5 inches, these machine screws offer strong, consistent engagement in tapped holes. The slotted drive accommodates common screwdrivers, while the round head provides a clean, finished look on panels and equipment.

Material: Carbon steel with zinc plating for corrosion resistance

Size: 5/16″ diameter, 18 threads per inch (5/16-18 UNC)

Length: 5 inches

Head type: Slotted round head

Drive: Slotted

Finish: Zinc plated

Applications include securing panels, brackets, and components in electrical enclosures, machinery housings, equipment racks, and more. These screws are compatible with standard tapping and pre-threaded holes, offering quick, secure assemblies.

Tips for best results: ensure the mating hole is properly threaded for 5/16-18 UNC, apply appropriate torque to avoid stripping, and use the correct screwdriver bit to maintain drive integrity.