3/4-10 x 24 A307 Grade A Carriage Bolt HDG

#21 Heavy Duty Jobber Drill Bit

Hot-Dip Galvanized nuts are over tapped per ASTM A563

The zinc plating provides a protective layer that enhances resistance against moisture

1/2 x 2 3/4 Mushroom Spike Zinc Plated (50)

1/2-20 x 6 1/2 Hex Cap Screw SS 316 (A4) 3/8 Hex Lag Screws 18-8 Stainless Steel 3/4-10 x 24 A307 Grade1 2 20 x 6 1 2 Hex Cap Screw SS 316 (A4) . 316 series stainless steel differs from 18 8 by its molybdenum content (2 3%) and a higher nickel content (10 14%). 316 stainless steel has greater corrosion resistance than 18 8 as well as superior strength at high temperatures.