You can buy as many zinc-plated mushroom Spike® fasteners as you need

50 x 240 Socket Cap Screw 12

1-8 x 6 A307A Hex Tap Bolt Zinc Plated

1 1/2-6 x 1 1/2 Socket Set Screw Cup Point Alloy

1 3/8 x 36 ITM SDS Max X-Cutter Hammer Drill Bit

5/16-18 x 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50) 5/8-11 Grade 8 Hex Cap Screws Yellow Zinc Plated You can buy as many5 16 18 x 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50) . L9 High Tensile Strength Hex Cap Screws 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. Brighton Best manufactures L9 bolting from AISI alloy steels. L9