the T20 thread is designed to hold more securely and last longer than other screws

5/16-18 x 7 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (225)

160 x 3 screws are designed to last

7/16-20 x 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (400)

5/16-18 x 1 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (1400)

5/8-11 x 6 1/2 A325 Type 1 Heavy Hex Bolt Plain Domestic (USA) - Bulk Keg (225) 1/2-13 Hex Tap Bolts 18-8 Stainless Steel the T20 thread is designedThis 5 8 11 x 6 1 2 A325 Type 1 Heavy Hex Bolt Plain Domestic (USA) Bulk Keg contains 225 bolts and is perfect for heavy duty construction projects. These grade 5 bolts are precision engineered in the US for superior shock resistance and strength. Get your job done with reliable results.