9/16-12 x 1 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (275)

#32 x 6 High Speed Aircraft Bit Cobalt

1/2-20 x 4 1/2 Hex Cap Screw SS 18-8 (A2)

#17 Heavy Duty Drill Bit - Stubby Length

3/4-16 x 5 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (25) 18" Aircraft Bits - Fractional 9/16-12 x 1 1/2 Grade3 4 16 x 5 1 2 Grade 8 Hex Cap Screw Plain Domestic USA (25). 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