Tee-Joint Fastener, Dimensional Standards ISO 9001:2015, Finish Black Oxide, For Tubing Outside Diameter 1 in, For Tubing Wall Thickness 16 ga, Installation Type Weld, Material Steel, Material Grade/Class Not Graded, Shape Square, System of Measurement Inch, Thread Direction Right Hand, Thread Size 5/16 In. -18, Thread Type Coarse, Package Quantity 10. This item has been restricted from sale in the following state (s): []