Several head styles and anchor materials are available

13/32 x 12 High Speed Aircraft Bit Cobalt

#2 x 6 High Speed Aircraft Bit Cobalt

Square drive prevents cam out and stripping

3/4-16 x 2 1/2 Hex Cap Screw SS 18-8 (A2)

7/16-14 x 5 Grade 8 Hex Cap Screw Plain Domestic USA (150) 3/4-10 Socket Set Screws Cup Point Alloy Several head styles and anchor7 16 14 x 5 Grade 8 Hex Cap Screw Plain Domestic USA (150). Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on diameters 1 4 to