Hillman Hex Cap Screw 5/8 " - 11 X 4-1/2 " Zinc Dichromate Grade 8 Steel Hex Hex 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. *; ; Brand Name: Hillman Head Diameter: 5/8 in. Length: 4-1/2 in. Finish: Heat Treated Material: Steel Product Type: Hex Head Cap Screw Number in Package: 25 pk Grade: 8 Grade Thread Type: Coarse Packaging Type: Boxed Unit of Measurement: Metric Features Hex head Grade 8 Zinc dichromate steel USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.