9/16-18 x 6 Grade 5 Hex Cap Screw Plain Domestic USA (75)

1 1/4-12 x 12 Socket Cap Screw Alloy

Flat countersunk head with self-countersinking nibs

1/2 x 18 High Speed Aircraft Bit

9/16-18 x 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (25) Square Trim-Head Wood Decking Screws 316 Stainless Steel 9/16-18 x 6 Grade 59 16 18 x 2 Grade 8 Hex Cap Screw Yellow Zinc Plated 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