Flat head bolt is made of high quality 304 316 2205 stainless steel material,prevent rust and oxidation.
Flat head bolt is often used in conjunction with adjustable supports, flange pins, wedge-shaped anchors, square sawtooth washers, and nuts to secure granite and marble to the exterior wall of the building and to adjust the cavity between the wall and granite or marble.
Flat head bolt also known as spade bolts, you can use these versatile hangers in a threaded hole (as you would a screw), or secure them with a nut (as you would a bolt). Zinc plating provides corrosion resistance in wet environments. Material meets ASTM A307 specifications for quality.