Notched threads for cutting into concrete

Marine screws bite and hold fast in fiberglass

deformation controlled expansion anchors with a pre-assembled expander plug

5/8-11 x 5 1/2 Hex Cap Screw SS 18-8 (A2)

1/4 x 2 3/4 Phillips Flat Hi-Low Thread Concrete Screws Blue Ceramic Coated

5/8-11 x 5 Hex Tap Bolt Silicon Bronze ThruLOK Screws Bolt Fastening System Notched threads for cutting into5 8 11 x 5 Hex Tap Bolt Silicon Bronze. Silicon Bronze Hex Tap Bolts are similar to low carbon steel in hardness but offer high resistance to corrosive environments such as sea water, gases, sewage and atmospheric conditions. Commonly used in naval construction and power plant applications.