Flat countersunk head with self-countersinking nibs

1960 series

increasing follow-up expansion should the hole increase in size as a result of a crack

3/4-10 x 13 Socket Cap Screw Alloy

3/4-10 x 7 Grade 5 Hex Cap Screw Zinc Plated

7/16-20 x 7/8 Grade 5 Hex Cap Screw Plain Domestic USA (700) 1/4-28 Grade 5 Hex Cap Screws Plain - Domestic USA Flat countersunk head with self-countersinking7 16 20 x 7 8 Grade 5 Hex Cap Screw Plain Domestic USA (700). Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1 inch is a minimum of