You can utilize these pieces of hardware in solid or hollow surfaces

Perfect for heavy-duty applications

5/8-11 x 2 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (25)

7/8-9 x 6 Flat Socket Cap Screw Alloy

#8-32 x 3/8 Socket Head Cap Screws Thermal Black Oxide Alloy Steel Domestic USA - Package (100) 1-8 Grade 5 Hex Cap Screws Plain - Domestic USA You can utilize these pieces#8 32 x 3 8 Socket Head Cap Screws Thermal Black Oxide Alloy Steel Domestic USA Package (100) Socket Cap Screws with Thermal Black Oxide finish are made in the USA from durable alloy steel for superior strength and reliability. Featuring a hex drive and corrosion resistant coating, ideal for high performance and structural applications.