High red hardness of cobalt permits speeds 30% greater than standard heavy duty split point (HSS) drills

5/8-11 x 2 1/2 Button Socket Cap Screw Alloy

7/32 x 18 High Speed Long Boy

Meets ASTM A510 for carbon steel manufacturing

7/8-14 x 6 Grade 8 Hex Cap Screw Plain Domestic USA (15) 1/2-13 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA High red hardness of cobalt7 8 14 x 6 Grade 8 Hex Cap Screw Plain Domestic USA (15). 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 2