Lockbolt fastening system

A swage collar, comprising:

• a shank having a first end, a second end opposite the first end, an outside diameter, and an overall length between the first end and the second end of the shank;
• a flange extending from the first end of the shank to a flange endpoint that is located intermediate the first end of the shank and the second end of the shank, the flange endpoint defining a swage length of the shank between the flange endpoint and the second end of the shank;
• and
• a through bore extending longitudinally through the shank from the first end of the shank to the second end of the shank, the through bore defining an inside diameter, the inside diameter and the outside diameter together defining a wall thickness of the shank,
• wherein the swage length of the shank is in a range of about 5 times the wall thickness of the shank to about 7.5 times the wall thickness of the shank.

A fastener, comprising:

• a pin member having an elongated shank portion having a first end and a second end opposite the first end, a head at the first end, a pull portion at the second end, and a plurality of lock grooves intermediate the first and second ends of the shank portion;
• and
• a swage collar including
• a shank having a first end, a second end opposite the first end of the shank of the swage collar, an outside diameter, and an overall length between the first end of the shank of the swage collar and the second end of the shank of the swage collar,
• a flange extending from the first end of the shank of the swage collar to a flange endpoint intermediate the first and second ends of the shank of the swage collar, the flange endpoint defining a swage length of the shank of the swage collar between the flange endpoint and the second end of the shank of the swage collar,
• and a through bore extending longitudinally through the shank of the swage collar from the first end of the shank of the swage collar to the second end of the shank of the swage collar, the through bore defining an inside diameter, the inside diameter and the outside diameter together defining a wall thickness of the shank of the swage collar,
• wherein the swage length of the shank of the swage collar is in a range of about 5 times the wall thickness of the shank of the swage collar to about 7.5 times the wall thickness of the shank of the swage collar.