Hillman Fasteners 375286 Rawl 3/16 X 1-1/4-Inch Tapper Concrete Screw Anchor With Hex Washer Head, 100-Pac - Quantity 20 Masonry Screws, Hex Head

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Price: $309.14    

Product Description

Rawl, 100 Pack, 3/16" x 1-1/4" Hex Washer Head Tapper Concrete Screw Anchor With Bit, Blue Perma-Seal Coating, 1" Embedment, Ultimate Tension 4,000 PSI Concrete 730 LB, Ultimate Shear 4,000 PSI Concrete 1,090 LB.

Hillman Fasteners 375286 Rawl 3/16 X 1-1/4-Inch Tapper Concrete Screw Anchor With Hex Washer Head, 100-Pac - Quantity 20 Masonry Screws, Hex Head Review

The masonry bit included with the 3/16 screws is 5/32 (the bit is only 1/32 smaller than the screws). No matter how carefully I tried to make the hole into the concrete block, it was always too large. The screw was not tightly placed into the concrete. I avoided using a hammer setting, hoping the holes would be smaller.

What was the TAPCON manufacturer thinking? Holes drilled into concrete are not exactly precision rounds.

These screws are EXPENSIVE. Now I have to go shopping for a set of tiny masonry bits?

update (2 weeks later):
My final solution was to use two drill bits. I use an 1/8 bit to make the full-depth hole, and then I use the 5/32 bit but only to a depth of about a 1/2 inch. This works, but requires the use of two drills. Tapcon was supposed to avoid that hassle

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