3/8-16 Drop-In Anchor Zinc Plated (50)

3/8-16 x 5 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (50)

9/16-12 x 6 Grade 8 Hex Cap Screw Plain Domestic USA (75)

and the jaws open to a lock position when the screw is inserted

5/8-11 x 1 1/8 Socket Cap Screw Alloy

3/8-24 x 5/8 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (1200) 9/16-18 Socket Set Screws Cup Point Alloy 3/8-16 Drop-In Anchor Zinc Plated3 8 24 x 5 8 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (1200) . 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