Crete Flex® SS4 Concrete Fasteners › Crete-Flex SS4 Concrete Screws: #14 X 6, Phillips Flat Head, Shipper of 500 - DFM4EMF850 Image 1 of 1 Crete-Flex SS4 Concrete Screws: #14 X 6, Phillips Flat Head, Shipper of 500 - DFM4EMF850 $1,267.50 #14 x 6" Crete-Flex Concrete Screw Anchors, Phillips Flat Head, #3 Drive Size, 1/4" Drill Bit Size, 410 Stainless Steel Quantity: Add To Cart Added! #14 x 6" Crete-Flex Concrete Screw Anchors, Phillips Flat Head, #3 Drive Size, 1/4" Drill Bit Size, 410 Stainless Steel