The pin fits snugly in a hole in the middle of the screw

1 1/4-7 x 6 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (6)

Designed with the wide USS pattern

7 x 1 5/8 Simpson Trim-Head Self-Drilling Siding Screw - Square Drive 410 SS - Box (100)

5/8-11 x 4 Carriage Bolt 316 (A4) Stainless Steel Strong-Drive SDS Heavy-Duty Connector Screw 316 Stainless The pin fits snugly in5 8 11 x 4 Carriage Bolt 316 (A4) Stainless Steel is made from A4 316 Stainless Steel providing superior corrosion resistance and durability to ensure a long lasting product for outdoor and marine applications With a tensile strength of 80ksi, this bolt will provide a secure and strong hold for your application