000 psi and for diameters over 1 inch to 1 1/2

#23 Heavy Duty Drill Bit - Stubby Length

5/8-11 x 7 1/2 Socket Cap Screw Alloy

(SP®) SNAPSKRU® Anchor & 8 x 1 1/2 Combo Screw (50)

#40 Heavy Duty Drill Bit - Stubby Length

1/4 x 1 Mushroom Spike Zinc Plated (100) 10-32 Socket Cap Screws Alloy 000 psi and for diameters1 4 x 1 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 greatly