Fire Door Thru-Bolts Overall Length 2 in Overall Width 9/16 in Overall Height 9/16 in Color Silver Flange Thickness Not Applicable Flange Width Not Applicable For Use With Doors Fire Doors Includes Machine Screw Insert Material Not Applicable Insert Size Not Applicable Material Steel Projection 1/8 in Sold As Set Standards NFPA 80 Stays Flexible to 50 Degrees F Product Type Fire Door Thru-Bolts Package Quantity 20