Hex Head Bolt 3/8"-16 x 3-1/2" 18-8 Stainless Steel

18-8 stainless steel hex head bolt  3/8" diameter, 16 threads per inch,  3-1/2" long, uses 9/16" wrench.  Stainless steel hardware is stronger and much more corrosion resistant over zinc plated or galvanized hardware.  When using an impact wrench on stainless steel, it is important to use a premium anti seize compound or "waxed" locknuts to keep hardware from overheating and stripping.