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A method includes providing a shaft having a coupling section. The coupling section has a generally cylindrical exterior surface. The method includes applying a coating to the coupling section to form an engaging surface. The method further includes cold-forming the shaft and the coating such that a

A method includes providing a shaft having a coupling section. The coupling section has a generally cylindrical exterior surface. The method includes applying a coating to the coupling section to form an engaging surface. The method further includes cold-forming the shaft and the coating such that a plurality of protrusions is formed in the engaging surface. The cold-forming of the shaft and the coating is performed contemporaneously.

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1. A method comprising: providing a shaft having a coupling section, said coupling section having a generally cylindrical exterior surface;applying a polyamide coating to the coupling section to form an engaging surface; andcold-forming said shaft and said polyamide coating such that a plurality of

1. A method comprising: providing a shaft having a coupling section, said coupling section having a generally cylindrical exterior surface;applying a polyamide coating to the coupling section to form an engaging surface; andcold-forming said shaft and said polyamide coating such that a plurality of protrusions is formed in said engaging surface. 2. The method of claim 1 wherein applying said polyamide coating to said coupling section includes spraying said coating onto said coupling section. 3. The method of claim 1 wherein said polyamide coating is a nylon coating. 4. The method of claim 1 wherein said engaging surface is disposed radially outward of said exterior surface of said coupling section. 5. The method of claim 4 further comprising: providing a coupling with a mating coupling section, said mating coupling section including a plurality of mating protrusions; andinserting the coupling section into the mating coupling section such that said protrusions of said coupling section matingly engage said mating protrusions. 6. The method of claim 1 wherein said protrusions are selected from a group consisting of teeth, splines and lobes. 7. The method of claim 1, wherein said coupling section is hollow and wherein cold-forming said coupling section includes: inserting a male mandrel into said coupling section; anddeforming said coupling section radially inward against said male mandrel. 8. The method of claim 7, further comprising: providing a shaft with a mating coupling section; andinserting said mating coupling section into said coupling section to form a slip joint. 9. The method of claim 1, wherein cold-forming said coupling section comprises a cold-rolling operation. 10. A method comprising: providing a shaft having a coupling section, said coupling section being generally circular or annular in cross-section;applying a polyamide coating to an exterior surface of said coupling section; andcold-rolling said coupling section to form a plurality of protrusions, each of said protrusions being formed by a portion of said shaft and having an outer layer formed of said polyamide coating. 11. The method of claim 10, wherein applying said polyamide coating to said exterior surface of said coupling section includes spraying the said polyamide coating onto said exterior surface. 12. The method of claim 11, wherein said coupling section is hollow and wherein cold-forming said coupling section includes: inserting a male mandrel into said coupling section; anddeforming said coupling section radially inward against said male mandrel. 13. The method of claim 10, wherein said polyamide coating is a nylon coating. 14. The method of claim 10, wherein said exterior surface defines an inside diameter of said coupling section. 15. The method of claim 14, further comprising: providing a coupling with a mating coupling section, said mating coupling section including a plurality of mating protrusions; andinserting said coupling section into the mating coupling section such that said protrusions of said coupling section matingly engage said mating protrusions. 16. The method of claim 10, wherein said protrusions are selected from a group consisting of teeth, splines and lobes. 17. The method of claim 10, further comprising: providing a shaft with a mating coupling section, said mating coupling section including a plurality of mating protrusions; andinserting said mating coupling section into said coupling section such that the protrusions of said coupling section matingly engage said mating protrusions. 18. A method comprising: providing a member;coating said member with a nylon; andcold-forming protrusions from said member and said coating wherein sad protrusions are configured to transmit rotary power therethrough.