<p>Hex head cap screws and flat head slotted cap screws meet specific dimensional specifications and are often used in precise applications where tight tolerances are required. The flat slotted head is preferred over the hex head when head clearance is a concern. </p> <p>Hex Head Flat washer face bearing surface under the hex head that meet specific specifications as described by ASME B18.2.1</p> <b>Features</b> <ul> <li>50 Piece</li> </ul> <b>Specifications</b> <ul> <li><b>Size:</b> 1/2&quot;-20 x 5&quot;</li> <li><b>Thread Size:</b> 1/2&quot;-20</li> <li><b>Material:</b> Alloy Steel</li> <li><b>Drive Style:</b> External Hex</li> <li><b>Finish:</b> Yellow Zinc</li> <li><b>Grade:</b> Grade BD</li> <li><b>Head Style:</b> Hex Head</li> <li><b>Thread Coverage:</b> Fine Threaded</li> <li><b>Thread Style:</b> Right Hand</li> <li><b>Weight:</b> 15.5 lbs</li> </ul>- SKU: APFN6732