1/4-28 x 1 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (2050)

4-4 A194 2H Heavy Hex Nut Plain

#28 High Speed Aircraft Bit

3/8-16 x 7 1/2 Socket Cap Screw Alloy

#21 Heavy Duty Jobber Drill Bit

7/16-20 x 1 Grade 8 Hex Cap Screw Plain Domestic USA (100) 7/16-20 Hex Cap Screws 18-8 Stainless Steel 1/4-28 x 1 1/2 L97 16 20 x 1 Grade 8 Hex Cap Screw Plain Domestic USA (100). 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