Material: ZINC PLATED STEEL Assembled Product Length: 0.75" Fastener Drive Type: ROBERTSON Assembled Product Height: 0.19" Assembled Product Width: 0.19" Fastener Diameter (Imperial): 0.19" Fastener Length (Imperial): 0.75" Fastener Length (Metric): 19.05 MM Fastener Diameter (Metric): 4.83 MM . Stove bolts • Round head • With hex nuts • Bright zinc plated • Used to fasten metal to metal, metal to wood and other types of materials, with machine tapped threads or nuts, where disassembly may be required or where a more secure clamping of parts is desired