3/4-10 x 11 A307 Grade A Carriage Bolt HDG

15/64 Heavy Duty Drill Bit - Stubby Length

1/4-20 x 3/4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (100)

00 x 170 Socket Cap Screw 12

18-8 stainless steel is best for applications where corrosion resistance is required

3/8 L9 USS Tension Flatwasher Yellow Zinc Plated Domestic USA (3300) LedgerLOK Ledger Board Fasteners 3/4-10 x 11 A307 Grade3 8 L9 USS Tension Flatwasher Yellow Zinc Plated Domestic USA (3300) . L9 High Tension USS pattern flat washers are designed for use in high stress, severe service environments. The highest mechanical strength off the shelf fastening system available, its special features control torque tension characteristics to develop high clamp loads when using properly controlled tightening methods.