18-8 stainless steel hex tap bolts will have a typical composition of 18% chromium and 8% nickel

7/16-14 x 1 Grade 8 Hex Cap Screw Plain Domestic USA (100)

7/8-9 x 1 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

5/16-24 x 1 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (100)

1-8 x 2 Socket Set Screw Cup Point 18-8 (A2) Stainless Steel

3/8-24 x 5 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (175) 8" Ship Augers 18-8 stainless steel hex tap3 8 24 x 5 1 2 Grade 8 Hex Cap Screw Plain Domestic USA (175). 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