Red Head Trubolt Type 304 Stainless Steel Wedge 3/8 X 3 Inch Anchor serves many applications well. It withstands rusting in architectural and food processing environments and resists organic chemicals, dye stuffs, and many inorganic chemicals. Typical applications include: Cladding, stadium seating, etc. These Red Head anchors work well with an urban environment with minimal pollution. Red Head anchors consist of a high-strength threaded stud body, expansion clip, nut and washer. The expansion clip consists of a split cylindrical ring with undercutting grooves. The exposed end of the anchor is stamped to identify anchor length. Stampings should be preserved during installation for any subsequent embedment verification. Specs: Thread Length (inch) -- 1-3/4; Anchor Diameter and Drill Bit Diameter (inches) -- 3/8 - 16; Overall Length (inch) -- 3; Max. Thickness of Materials to be Fastened (inch) -- 1-1/8; Quantity per Box -- 50.