UNC 7/16" Hex Bolt Set Screws High Tensile 8.8 Zinc BZP
E.g. Thread sizes, Spanner/ Wrench Sizes etc. CARBON ZINC CR+3 High Tensile, Bolt, 5 Grade Steel (8.8) UNC and UNF high tensile standard is marked with an, '5'. This is comparable with, High Tensile - 8.8.