https://www.acehardware.com/departments/hardware/nuts-and-bolts/carriage-bolts/55510
HILLMAN 3/8 in. X 5 in. L Hot Dipped Galvanized Steel Carriage Bolt 50 pk Mfr# 7812590 - Ace...
Galvanized finish is perfect for rust prevention *Find the HDG CARR SCRW 3/8X5 at Ace.