3/8"-16 Zinc Plated Steel Wedge Anchors. Comes with Washer and Nut as shown. Commonly used to secure solid concrete or masonry surfaces. Instructions shown as second photo in photo gallery above.
Thread Size: 16 TPI, UNC / Coarse Thread
System of Measurement: US / Inch
Material: Steel with Zinc Plating (CR+3, RoHS Compliant)