Powers Fasteners 05512-PWR 3/16" X 4" Mushroom Head Spike Anchor 100/Box

Mushroom Head Carbon Steel Spike (Tamperproof) - The SPIKE® anchor is a patented, one-piece, tamper-proof vibration resistant anchor for use in concrete, block, brick or stone.  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 greatly reduces the overall cost of an anchor installation.

• Anchor Size: 3/16" x 4"
• Drill Diameter: 3/16"
• Minimum Embed: 1-1/4"
• Standard Box: 100