17/64 Heavy Duty Jobber Drill Bit

1/4-20 Drop-In Anchor Zinc Plated (100)

3/4-16 x 1 1/4 Socket Cap Screw Alloy

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

3/16 x 1 1/4 Mushroom Spike Zinc Plated (100) 3/8 Hex Lag Screws 18-8 Stainless Steel 17/64 Heavy Duty Jobber Drill3 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