HS-1 Home » Products » Specification Drainage Products » Parts » HS-1 MIFAB®’s HS-1 galvanized steel, 3/8″ x 7/8″ hex head cap screws. Specification Sheet Catalog Catalog List Pricing Current Catalog: MPB-2025-04-USA Downloads Downloads Features & Benefits Typical Installations Outlet Selection Guide All Star Cover Flyer Drain Specifications Terms and Warranty Videos Videos Top Set Drain Demonstration All-Star Drain Video Return to Products