Method for fastening

1. A method of fastening a first and a second object, the method comprising:

providing a fastener body having a longitudinal axis and a first external male threaded portion, and two or more through-holes perpendicular to the longitudinal axis of the fastener body in the first external male threaded portion, wherein each of the through-holes is on a different plane, located perpendicular to the longitudinal axis of the fastener, and wherein the two or more through-holes are on a different one of the planes and angle from an adjacent through-hole of the two or more through-holes; and

tightening a fastening member configured to matingly engage the first external male threaded portion, wherein at least one of the two or more through-holes is capable of receiving a pin without having to rotationally adjust the fastening member such that compression is maintained between the first object and the second object.

2. The method of claim 1 , further comprising disposing a head opposite the first external male threaded portion.

3. The method of claim 1 , further comprising disposing a second external male thread opposite the first external male thread.

4. The method of claim 1 , wherein a longitudinal axis of the two or more through-holes form an angle between 0 and 90 degrees.

5. The method of claim 1 , wherein the through-holes are intersecting or non-intersecting.

6. The method of claim 1 , further comprising sizing the through-holes to hold a pin, a split pin, a hairpin cotter pin, a bowtie cotter pin, a circle cotter, a cotter pin, or a lock-wire.

7. The method of claim 1 , wherein the first external male threaded portion extends throughout the body to a seat surface on a head portion on the body opposite the first external male threaded portion.

8. The method of claim 1 , wherein the first external male threaded portion is configured to matingly engage a fastening member having two or more openings or notches through which the pin is inserted to prevent loosening of the fastening member as a result of vibration.

9. The method of claim 1 , wherein the first external male threaded portion and the through-holes are configured to matingly engage a castellated fastener, and wherein at least one of the two or more through-holes are selected to align with an aligned pair of notches in the castellated fastener, and the other through-hole aligns with and is blocked by the pair of notches.

10. The method of claim 9 , wherein the pin is a split pin, a hairpin cotter pin, a bowtie cotter pin, a circle cotter, a cotter pin, or a lockwire.

11. A method of fastening two or more objects on a rotorcraft, the method comprising:

providing a fastener body having a longitudinal axis and a first external male threaded portion, and two or more through-holes perpendicular to the longitudinal axis of the fastener body in the threaded portion, wherein each of the through-holes is on a different plane located perpendicular to the longitudinal axis of the fastener, and wherein the two or more through-holes are on a different one of the planes and angle from an adjacent through-hole of the two or more through-holes; and

tightening a fastening member configured to matingly engage the first external male threaded portion, wherein at least one of the two or more through-holes is capable of receiving a pin without having to rotationally adjust the fastening member such that a specific torque or compression is maintained between the two or more objects, wherein the two or more through-holes form a spiral along the length of the fastener body such that each through hole is on a different plane and angle from an adjacent through-hole.