Lockbolt fastening system
A swage collar includes a shank, a flange, and a through bore. The shank includes 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. The flange extends from the first end of the shank. The through bore extends longitudinally through the shank from the first end of the shank to the second end of the shank. The through bore defines an inside diameter. The inside diameter and the outside diameter together define a wall thickness of the shank. The wall thickness of the shank is in a range of about 0.1 times the overall length of the shank to about 0.16 times the overall length of the shank.
1. 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;
a flange extending from the first 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 wall thickness of the shank is in a range of about 0.13 times the overall length of the shank to about 0.14 times the overall length of the shank.
2. The swage collar of claim 1 , wherein the swage collar is made from either low-carbon steel or medium-carbon steel.
3. The swage collar of claim 2 , wherein the swage collar is as-headed.
4. The swage collar of claim 2 , wherein the swage collar is thermally processed.
5. 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 6.0 times the wall thickness of the shank to about 7.0 times the wall thickness of the shank.
6. The swage collar of claim 5 , wherein the swage length of the shank is a range of from about 6.3 times the wall thickness of the shank to about 6.6 times the wall thickness of the shank.
7. The swage collar of claim 5 , wherein the swage collar is made from either low-carbon steel or medium-carbon steel.
8. The swage collar of claim 7 , wherein the swage collar is as-headed.
9. The swage collar of claim 7 , wherein the swage collar is thermally processed.
10. 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 6.25 times the wall thickness of the shank of the swage collar to about 6.67 times the wall thickness of the shank of the swage collar.
11. The fastener of claim 10 , wherein the shank portion of the pin member includes a threaded portion having a plurality of threads, and wherein the lock grooves are formed by the plurality of threads.
12. The fastener of claim 10 , wherein the pin member is a Class 10.9 strength level bolt.
13. The fastener of claim 10 , wherein the swage collar is made from either low-carbon steel or medium-carbon steel.
14. The fastener of claim 13 , wherein the swage collar is as-headed.
15. The fastener of claim 13 , wherein the swage collar is thermally processed.