Imperial 20268 USS Hex Head Cap Screw, Grade 5, 3/4x3-1/4 Metal Conduit Support Black molded high density polyethylene

Black molded high density polyethylene

Raising the fire off the floor of your fireplace not only creates a hotter fire but helps draft the smoke and fumes out the chimney instead of into your home

Hardware Not Included

Superior odor sealing for smoke

Imperial 20268 USS Hex Head Cap Screw, Grade 5, 3/4x3-1/4 Metal Conduit Support Black molded high density polyethyleneHighlights: Size: 3 4X3 1 4 Thread pitch: 3 4 10 UNC Conforms to SAE Grade 5 physical and mechanical specifications Zinc plated for corrosion resistance Technical Data: Material and Mechanical Properties of SAE J429 Dimensions: ANSI ASME B18. 2. 1 Hex Head Cap Screws Tensile: 1 4" 1" Nominal Diameter 120,000 psi (minimum) over 1" Nominal Diameter 105,000 psi (minimum) Proof Load: 1 4" 1" Nominal Diameter 85,000 psi; over 1" Nominal Diameter 74,000 psi