Drop-in anchors are also available in coil-threaded versions for 1/2 inch and 3/4 inch coil threaded rod

When a screw reaches the collar

3/16 x 4 Powers Flat Toggle Bolt Zinc Plated (50)

#24 Heavy Duty Drill Bit - Stubby Length

1008-1010 for sizes up to 1 inch (cold-formed) and 1045 steel for sizes over 1 inch (hot-formed)

5/8-11 x 6 1/2 Socket Cap Screw Alloy 1/2 Hex Lag Screws Hot Dipped Galvanized Drop-in anchors are also available5 8 11 x 6 1 2 Socket Cap Screw Alloy . Alloy Socket Head Cap Screws from Brighton Best. Hardness of RC 38 43, meets or exceeds ASTM A574. Manufactured from heat treated alloy steel, 1960 series.