7/8-9 x 6 Grade 8 Hex Cap Screw Yellow Zinc Plated

17/64 Heavy Duty Jobber Drill Bit

1 1/2-6 Grade 2 Finished Hex Nut Zinc Plated

#41 Heavy Duty Drill Bit - Stubby Length

1 1/8-7 x 12 Socket Cap Screw Alloy

3/16 x 1 1/4 Mushroom Spike Zinc Plated (100) 3/8 Hex Lag Screws 18-8 Stainless Steel 7/8-9 x 6 Grade 83 16 x 1 1 4 Mushroom Spike Zinc Plated (100) . The Spike anchor is a patented, one piece, tamper proof, vibration resistant anchor for use in concrete, block, brick or stone. Several head styles and anchor materials are available. The Spike anchor is formed with an "s" shaped configuration at the working end of the anchor to create an expansion mechanism. Since the anchor is pre expanded, there is no secondary tightening operation required which