It has a hexagonal drive at one end and a cup-shaped indentation at the other end

this screw comes in a box of 1000 for your convenience

they provide increased strength and durability — guaranteed to last

This package contains 1500 screws

1-8 x 9 A325 Type 1 Heavy Hex Bolt Plain Domestic (USA) - Bulk Keg (50) Square Bugle-Head Decking Screws Dacrotized It has a hexagonal driveThis 1 8 x 9 A325 Type 1 Heavy Hex Bolt is domestically produced in the USA for superior quality. This 50 pack comes in a bulk keg for easy storage and transportation. This heavy duty bolt is designed to provide maximum strength and durability.