Through-hole plug

A method of securing a through-hole plug into a drain hole of a boat, the method comprising:

• providing a through hole plug having a unitary body configured to fit within a drain hole, the unitary body including a first end, a second end, and a main body positioned therebetween, the unitary body further including a length that is greater than a length of the drain hole, such that the first end of the body extends beyond the drain hole on a first side of the drain hole and the second end of the body extends beyond the drain hole on a second side of the drain hole, wherein the second side of the drain hole is opposite to the first side of the drain hole, the first end of the unitary body further including a planar surface, wherein the planar surface of the first end includes a diameter that is larger than a diameter of the drain hole to prevent the first end from entering the drain hole, the first end further including a neck configured to transition with a rim positioned on the first side of the drain hole for mating engagement therewith, the body further comprising a corrugated surface formed of a plurality of annular ribs, wherein the plurality of annular ribs form concentric rings of substantially equal radii extending around a circumference of the body and along the length of the body, and wherein the body further comprises a bore of uniform diameter positioned in a center of the body, the bore extending continuously within the center of the body along the length of the body from the top end of the body to the bottom end of the body;
• providing a bolt for insertion within the bore of the body, wherein the bolt includes a length that is greater than the length of the body, the bolt including a first end, wherein the first end of the bolt includes a handle for maneuvering the bolt in a clockwise or counter clockwise direction while inserted within the bore, the bolt further including a threaded portion, wherein a segment of the threaded bottom portion extends beyond the second end of the body;
• providing a flared nut with a conical tapered neck and annular flange including a threaded aperture sized to receive and mate with the threaded portion of the bolt;
• inserting the through-hole plug into the boat's drain hole, such that the first end of the body extends beyond the drain hole on the first side of the drain hole and the second end of the body extends beyond the drain hole on the second side of the drain hole opposite to the first side of the drain hole;
• and
• fastening the threaded portion of the bolt to the flared nut, such that a first end of the conical tapered neck is inserted into the bore.