1/2-13 x 17 1/4 Alloy Steel Socket Head Cap Screw answers the sourcing call when a standard-length socket screw simply is not long enough. The socket head form drives with an internal hex, allowing installation in counterbored and shielded locations where an external wrench cannot swing. Alloy steel construction gives the high tensile strength expected of socket head cap screws, appropriate for clamping structural and machine joints. Long lengths in this range are handled individually: each order is confirmed for availability and quoted before it ships. Pricing is quoted per 100 pieces; contact us for current pricing and availability on this size. If a nearby length or a modified version (point styles, tips, thread variations) is needed, ask — modification work is done on site. Orders are packaged and labeled for industrial stockroom use. The size is listed exactly as dimensioned so search and drawing callouts match one to one. Distributors and OEM purchasing teams can reference this exact size for repeat orders. The size is listed exactly as dimensioned so search and drawing callouts match one to one. Technical Highlights Material: Alloy Steel Thread: 1/2-13 Length: 17 1/4 in. Nominal Body Diameter: .500 in. Head Diameter: 0.735 Head Height: 0.492 Drive Type: Internal hex socket Finish: Plain (black)