Crete Flex® SS4 Concrete Fasteners › Crete-Flex SS4 Concrete Screws: #14 X 2-1/4, Hex Washer Head, Box of 100 - DFM4EMF350-100 Image 1 of 2 Image 2 of 2 Crete-Flex SS4 Concrete Screws: #14 X 2-1/4, Hex Washer Head, Box of 100 - DFM4EMF350-100 $86.75 #14 x 2-1/4" Crete-Flex Concrete Screw Anchors, Hex Washer Head, 5/16" Drive Size, 1/4" Drill Bit Size, 410 Stainless Steel Quantity: Add To Cart Added! #14 x 2-1/4" Crete-Flex Concrete Screw Anchors, Hex Washer Head, 5/16" Drive Size, 1/4" Drill Bit Size, 410 Stainless Steel