This 330-piece keg of Heavy Hex Bolts is made of steel

1 1/8-7 x 7 A307A Hex Bolt Plain Steel

with ultimate tensile strength up to 1

3/16 x 1 1/2 Mushroom Spike 316 SS (100)

Typical hardness is HRC 24-35 for diameters up to 1 1/2 inches

1/2-13 x 2 1/2 A325 Type 1 Heavy Hex Bolt Hot Dipped Galvanized Domestic USA - Bulk Keg (1000) M20-2.50 Hex Cap Screws DIN 931 18-8 Stainless Steel (A2) This 330-piece keg of HeavyThis high quality pack of 1000 1 2 13 x 2 1 2 A325 Type 1 Heavy Hex Bolt Hot Dipped Galvanized Domestic USA bolts has excellent rust and corrosion resistance for a long lasting use. Manufactured with heavy duty thread and steel for precision and reliable performance. USA made and tested for exceptional quality.