5/8-11 x 8 Grade 5 Hex Cap Screw Zinc Plated

Grade 5 Hex Cap Screws are manufactured from medium carbon steel

A307 Grade A Carriage Bolts are manufactured from low carbon steel to meet or exceed ASTM A307 Grade A

Hot-Dip Galvanized material will meet or exceed ASTM A153

5/8-11 x 2 Hex Cap Screw SS 316 (A4) 1/2-13 Hex Cap Screws 316 Stainless Steel 5/8-11 x 8 Grade 55 8 11 x 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.