Torque transmission driver

1. A torque transmission driver comprising:

a shaft for receiving and transmitting torque from a torque generating source;

a nib as part of the shaft having a key-shape adapted to fit a recess in a fastener extending along the entire length of the nib, and a length equal to or less than 0.050″;

a protruding lead end initiating from the key shape of the nib and transitioning to a cross-sectional shape different from the key shape with a taper at an angle between 10° and 30° from a plane perpendicular to the drive axis of the driver and with a substantial portion thereof adapted to complement and frictionally engage at least a portion of a recess in a fastener; and

a mean torque to failure value, wherein the mean torque to failure value has a standard deviation, and that standard deviation is less than approximately 7% of the mean torque to failure value.

2. The torque transmission driver of claim 1 wherein the key-shape has a major diameter and a minor diameter.

3. The torque transmission driver as set forth in claim 2 comprising in addition a taper of no greater than 55° in the shaft at the base of each lobe extending from the nib.

4. The torque transmission driver as set forth in claim 3 where the surface of the taper is convex.

5. The torque transmission driver as set forth in claim 1 wherein the key-shape is sized to size 10 or smaller driver.

6. The torque transmission driver as set forth in claim 1 wherein the key-shape is sized to size 6 or smaller driver.

7. The torque transmission driver as set forth in claim 1 wherein the key-shape is sized to a M6 or smaller driver.

8. The torque transmission driver as set forth in claim 1 wherein the key-shape is sized to a M3.5 or smaller driver.

9. The torque transmission driver as set forth in claim 1 wherein the nib is equal to or less than 0.030″.

10. The torque transmission driver as set forth in claim 9 wherein the key shape has a tolerance of 0.010″.