Press-set threaded screws and 2 stroke air tool for installation

1. A press-set threaded screw, comprising:

a screw body, having:

a body flange;

at least one anti-spinout member extending from the body flange;

a neck portion axially extending from the body flange; and

a threaded member axially extending away from the neck portion, the threaded member in a non-installed condition having first and second displacement portions each having a main thread portion, the first and second displacement portions separated by a first slot, the first displacement portion further divided into first and second sub-portions and the second displacement portion further divided into third and fourth sub-portions by a second slot which is oriented substantially perpendicular to the first slot, the perpendicular orientation of the first and second slots permitting the first, second, third and fourth sub-portions to continuously taper from a threaded member first end to a threaded member second end, such that the threaded member is formed in a frusto-conical shape between the threaded member first and second ends; and

a pin frictionally received in a bore created through both the body flange and the neck portion in a screw non-installed condition, the pin axially aligned to be slidably inserted into the first slot whereby the pin oppositely displaces the first and second displacement portions away from each other.

2. The press-set threaded screw of claim 1 , wherein the first and second displacement portions of the threaded member each include a run-out thread portion located proximate to a threaded member first end positioned proximate to the neck portion.

3. The press-set threaded screw of claim 2 , wherein the main thread portion of each of the first and second displacement portions extends from the run-out thread portion to a threaded member second end.

4. The press-set threaded screw of claim 1 , wherein the at least one anti-spinout member is integrally connected to and extending away from the body flange and is facing the threaded member.

5. The press-set threaded screw of claim 4 , wherein the at least one anti-spinout member includes four anti-spinout members equally spaced about a lower flange face of the body flange, each of the anti-spinout members having an arc shape.

6. A press-set threaded screw, comprising:

a screw body, having:

a body flange having a flange recess created in an upper flange face and at least one anti-spinout member extending axially away from a lower flange face;

a neck portion integrally connected to and extending from the body flange; and

a threaded member integrally connected to and extending away from the neck portion, the threaded member in a non-installed condition having first and second displacement portions separated by a first tapered slot and each having a main thread portion, the first tapered slot creating a frusto-conical shape of the first and second displacement portions between a threaded member first end proximate the neck portion and a threaded member second end; and

a pin frictionally received in a bore created through both the body flange and the neck portion having the pin partially extending above the upper flange face in a screw non-installed condition, the pin axially aligned for subsequent insertion into the first slot in a pin installed condition whereby the pin oppositely displaces the first and second displacement portions away from each other.

7. The press-set threaded screw of claim 6 , wherein the first tapered slot includes a slot wide end positioned proximate to the threaded member first end having a first width, and a slot narrow end positioned proximate to the threaded member second end having a second width smaller than the first width.

8. The press-set threaded screw of claim 7 , wherein the slot wide end is positioned proximate the neck portion and the slot narrow end is positioned proximate a free end of the threaded member.

9. The press-set threaded screw of claim 7 , wherein the slot wide end is substantially equal to a width of the pin.

10. The press-set threaded screw of claim 6 , further including a second tapered slot oriented substantially perpendicular to the first tapered slot, wherein the first and second tapered slots divide the first displacement portion into first and second sub-portions and divide the second displacement portion into third and fourth sub-portions.

11. A press-set threaded screw assembly, comprising:

a first connected member having an aperture with a first diameter;

a second connected member abutting the first connected member, the second connected member having a threaded bore co-axially aligned with the aperture, the threaded bore having a second diameter smaller than the first diameter; and

a screw body, having:

a body flange;

at least one anti-spinout member extending from the body flange;

a neck portion axially extending from the body flange; and

a threaded member axially extending away from the neck portion, the threaded member in a non-installed condition having first and second displacement portions separated by a tapered slot each having a main thread portion, the threaded member having a first width at a first end and a second width smaller than the first width at a second end, the first width being smaller than the first diameter and greater than the second diameter allowing the threaded member to pass through the aperture of the first connected member to engage with the threaded bore of the second connected member; and

a pin frictionally received in a bore created through both the body flange and the neck portion in a screw non-installed condition, the threaded member inserted through the aperture of the first connected member and received in the threaded bore of the second connected member in an initial installation condition, the pin axially aligned to be slidably inserted into the tapered slot whereby the pin oppositely displaces the first and second displacement portions away from each other to contact a plurality of female threads of the threaded bore defining an installed condition.

12. The press-set threaded screw assembly of claim 11 , wherein the body flange includes a flange recess created in an upper flange face, and a plurality of anti-spinout members extending axially away from a lower flange face.

13. The press-set threaded screw assembly of claim 12 , wherein the initial installation condition is reached when the plurality of anti-spinout members contact a member outward facing surface of the first connected member.

14. The press-set threaded screw assembly of claim 12 , wherein a force applied in an installation direction to a pin contact end slides the pin substantially through the tapered slot until the pin contact end reaches a bottom of the flange recess and is stopped from further motion in the installation direction by contact between the pin contact end and the body flange.

15. The press-set threaded screw of claim 11 , wherein threads of the main thread portions have a negative pitch and approximately a 58 degree angled thread to resist back-out of the threaded member of the press-set thread screw from the threaded bore in the installed condition.