Tapcon Scots 1/4" x 1-3/4" Stainless Steel Hex Head ClimaSeal Concrete Anchor Screws 3358407 | 100 Pack | Drill Bit Included: Amazon.com: Industrial & Scientific
CONFAST 1/4" x 1-3/4" Concrete Screws 410 Stainless Steel Phillips Flat Countersunk with Concrete Drill Bit for Anchoring to Masonry, Block or Brick (50 per Box): Amazon.com: Industrial & Scientific
Tapcon 1-3/4 in. L Star Flat Head Concrete Screws 75 pk - Ace Hardware
Self Tapping Concrete Screws - All Points Fasteners