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

5/16 x 12 High Speed Aircraft Bit Cobalt

1 1/4-7 x 9 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (6)

3/8-16 x 2 3/4 Grade 5 Hex Cap Screw Plain Domestic USA (400)

14 x 10 Log Hog® Heavy Duty Log Home Fastener (250)

7/8-9 x 2 Grade 5 Hex Cap Screw Plain Domestic USA (15) 5/8-11 Button Socket Cap Screws Alloy and the jaws open to7 8 9 x 2 Grade 5 Hex Cap Screw Plain Domestic USA (15). 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 120,000