High density fiber-optic connector

1. A connector sub-assembly comprising:

an insert housing defining two or more insert ferrule openings, a first orifice for receiving a fastener, and at least two insert alignment pin openings, and having a mating surface;

a retainer attached to the insert and defining two or more retainer ferrule openings, a second orifice for receiving a fastener, and at least two retainer alignment pin openings;

at least two alignment pins, each of the alignment pins disposed in one of the insert alignment pin openings and in one of the retainer alignment pin openings, thereby aligning the insert ferrule openings and the retainer ferrule openings, the at least two alignment pins extending from the mating surface; and

one and only one fastener disposed in said first and second orifices, thereby securing the insert to the retainer.

2. The connector sub-assembly of claim 1 , wherein the fastener is a screw.

3. The connector sub-assembly of claim 1 , wherein the alignment pins are press fit into the insert alignment pin holes.

4. The connector sub-assembly of claim 1 , wherein the alignment pins are configured to be received in alignment pin holes of a mating connector to align said mating connector with the insert.

5. The connector sub-assembly of claim 1 , wherein the insert ferrule openings and the retainer ferrule openings are configured to receive at least partially at least two multi-fiber fiber optic ferrules such that said ferrules are disposed between said insert housing and said retainer.

6. The connector sub-assembly of claim 5 , wherein the retainer ferrule openings are configured to receive a spring rearward of each of the at least two multi-fiber fiber optic ferrules, such that the spring urges against the retainer and thereby urging the each of the at least two multi-fiber fiber optic ferrules forward in the insert.

7. The connector sub-assembly of claim 6 , wherein the insert ferrule openings and the retainer ferrule openings are configured to receive two multi-fiber fiber optic ferrules.

8. A connector comprising:

a shell;

a connector sub-assembly disposed in the shell and comprising at least:

an insert housing defining two or more insert ferrule openings, at least two insert alignment pin openings, and one and only first orifice for receiving a fastener and having a mating surface;

a retainer attached to the insert and defining two or more retainer ferrule openings, at least two retainer alignment pin openings, and one and only second orifice for receiving said fastener;

at least two alignment pins, each of the alignment pins disposed in one the insert alignment pin openings and in one of the retainer alignment pin openings, thereby aligning the insert ferrule openings and the retainer ferrule openings, the at least two alignment pins extending from the mating surface; and

only one said fastener disposed in said first and second orifices, thereby securing the insert housing to the retainer; and

two or more ferrules disposed, at least partially in the insert ferrule openings and the retainer ferrule openings between said insert housing and said retainer, the retainer configured to restrict movement of the ferrule away from the mating face.

9. The connector of claim 8 , wherein the fastener is a screw.

10. The connector of claim 9 , wherein the mating surface is configured with a hole to receive the screw.

11. The connector of claim 10 , wherein the hole is the center of the mating surface.

12. The connector of claim 8 , wherein the alignment pins are press fit into the insert alignment pin holes.

13. The connector of claim 8 , wherein the alignment pins are at least 1.0 mm in diameter and are no greater than 1.75 mm in diameter.

14. The connector of claim 8 , wherein the alignment pins are configured to be received in alignment pin holes of a mating connector to align the mating connector with the connector.

15. The connector of claim 8 , further comprising a spring for each of the at least two ferrules, and wherein the retainer ferrule openings are configured to receive the spring rearward of the each of the at least two ferrules, such that the spring urges against the retainer and thereby urging the each of the at least ferrules forward in the insert.

16. The connector of claim 15 , wherein the spring is an oval in shape.

17. The connector of claim 8 , wherein the insert ferrule openings and the retainer ferrule openings are configured to receive two multi-fiber fiber optic ferrules.

18. A connector kit comprising:

a shell;

a connector sub-assembly configured for placement in the shell and comprising at least:

an insert housing defining two or more insert ferrule openings, at least two insert alignment pin openings, and one and only first orifice for receiving a fastener, and having a mating surface;

a retainer configured for attachment to the insert and defining two or more retainer ferrule openings, at least two retainer alignment pin openings, and one and only second orifice for receiving said fastener;

at least two alignment pins, each of the alignment pins configured to be disposed in one the insert alignment pin openings and in one of the retainer alignment pin openings, to thereby align the insert ferrule openings and the retainer ferrule openings, and to extend from the mating surface; and

only one said fastener configured to be disposed in said first and second orifices to secure the insert to the retainer.

19. The connector sub-assembly of claim 1 , wherein said insert housing further defines one and only first orifice for receiving said fastener, and wherein said retainer further defines one and only second orifice for receiving said fastener.

20. The connector sub-assembly of claim 19 , wherein said first and second orifices are disposed in the center of said insert housing and retainer, respectively.

21. The connector sub-assembly of claim 19 , further comprising at least one ferrule disposed between said insert housing and said retainer.