Our strongest screws, these Grade 9 steel screws have a tensile strength of 180,000 psi—about 20% stronger than our high-strength steel screws. Use them for heavy duty stamping applications as well as earth-moving machinery such as bulldozers and excavators. The zinc yellow-chromate plating resists corrosion in wet environments. Grade 9 steel hex head screws are marked with nine radial lines. Length is measured from under the head. To maintain strength.
10 pieces
9/16-12 X 1-3/4" Grade 9 Bolts Hex Cap Screws
1-3/4" measured from under the head