Material: ZINC PLATED STEEL Assembled Product Length: 0.75" Fastener Drive Type: ROBERTSON &" SLOTTED Assembled Product Height: 0.13" Assembled Product Width: 0.13" Fastener Diameter (Imperial): 0.13" Fastener Length (Imperial): 0.75" Fastener Length (Metric): 19.05 MM Fastener Diameter (Metric): 3.3 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