HILLMAN 3/4 in. D X 3-1/2 in. L Heat Treated Steel Hex Head Cap Screw 20 pkHex cap screws are bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. These screws are bolts with a washer face under the head. Use these grade 8 partially threaded screws anywhere a hex bolt may be used. Tighten with a wrench or a drill. * UPC: 008236082777 Manufacturer Part No: 220388 Head Diameter: 3 4 in. Finish: Heat Treated Length: 3 1 2 in. Material: Steel Product Type: Hex Head Cap Screw Number in Package: