They are plain domestic (USA) and produced to meet or exceed ASTM specifications

5/8-18 x 6 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (65)

152 x 6 Simpson Strong-Drive® SDWC Truss Wood Screw Clear Zinc w/ Orange Topcoat - Carton (500)

1/4-20 x 1 1/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100)

5/8-11 x 1 1/2 A325 Type 1 Heavy Hex Bolt Hot Dipped Galvanized - Bulk Keg (1000) Strong-Point® Phillips Bugle Head Self Drilling Drywall Screws Ruspert Coated They are plain domestic (USA)This 5 8 11 x 1 1 2 A325 Type 1 Heavy Hex Bolt is hot dipped galvanized and comes in a bulk keg of 1000 pieces. The hot dipped galvanization offers superior durability for heavy duty applications. The bulk package offers convenience and cost savings for industrial professionals.