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A method of manufacturing a vehicle frame, includes: forming compatible threads on a first rail composed of a first material and a second rail composed of a second material; forming a pair of locators on the first and second rails, said locators configured to indicate an alignment condition of the f

A method of manufacturing a vehicle frame, includes: forming compatible threads on a first rail composed of a first material and a second rail composed of a second material; forming a pair of locators on the first and second rails, said locators configured to indicate an alignment condition of the first rail and second rail when screwed together; and screwing together the first rail and second rail.

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1. A method of manufacturing a vehicle frame, comprising: forming compatible threads on an interconnecting member (ICM) and a first rail composed of a first material;screwing together the ICM and first rail; andwelding the ICM to a second rail composed of a second material such that a long axis of t

1. A method of manufacturing a vehicle frame, comprising: forming compatible threads on an interconnecting member (ICM) and a first rail composed of a first material;screwing together the ICM and first rail; andwelding the ICM to a second rail composed of a second material such that a long axis of the ICM intersects a long axis of the second rail. 2. The method of claim 1, further comprising: forming the ICM to be composed of a material that is weld-compatible with the second material. 3. The method of claim 1, wherein forming compatible threads on an interconnecting member (ICM) and a first rail includes forming a well-section in the threads configured to hold adhesive therein. 4. The method of claim 3, further comprising: adding adhesive between the ICM and first rail. 5. The method of claim 1, further comprising: forming a pair of locators on the ICM and first rail, said locators configured to indicate rotational alignment of the ICM and first rail when screwed together. 6. The method of claim 5, further comprising: forming a bolt;forming compatible threads on the bolt and the locators; andthreading the bolt through locators. 7. The method of claim 1, further comprising: forming the first rail to have a first cross-sectional configuration in one section and a second cross-sectional configuration in a second section;wherein the first rail includes compatible threads in the second section. 8. The method of claim 7, further comprising: forming a mechanical stop on an outer surface of the first rail configured to distribute a clamp load on the second rail to an outer surface of the first rail. 9. A vehicle frame assembly, comprising: a first structural member composed of a first material;a second structural member composed of a second material;a third structural member welded to the second structural member with a third member long axis intersecting a second member long axis;compatible threads on the first and second vehicle structural members; andcorresponding fastener holes on the first and second structural members configured to jointly receive a fastener. 10. The vehicle frame assembly of claim 9, further comprising: a well in the compatible threads of the first or second vehicle structural member, configured to hold adhesive therein. 11. The vehicle frame assembly of claim 10, further comprising: adhesive in the well of threads between the first and second vehicle structural members. 12. The vehicle frame assembly of claim 9, further comprising: a bolt threaded through the locators fastener holes. 13. The vehicle frame assembly of claim 9, further comprising: a mechanical stop formed on an outer surface of the first vehicle structural member, the stop configured to distribute a clamp load on the second vehicle structural member to the outer surface of the first vehicle structural member. 14. A vehicle frame assembly comprising: a first linear member formed of a first material, the first linear member having a first central axis and a first threaded portion with a first fastener hole extending through the first threaded portion;a second linear member formed of a second material, the second linear member having a second central axis, a second threaded portion with a second fastener hole extending through the second threaded portion, and a third threaded portion, the second threaded portion being engaged with the first threaded portion such that the first and second central axes are generally coaxial;a first bolt extending through the first and second fastener holes to restrain rotation of the first linear member relative to the second linear member; anda third linear member formed of the second material, the third linear member having a fourth threaded portion, the fourth threaded portion being engaged with the third threaded portion. 15. The vehicle frame assembly of claim 14, wherein the third linear member has a third central axis, the third central axis being generally coaxial with the first and second axes. 16. The vehicle frame assembly of claim 14, wherein the third linear member has a third central axis, the third central axis intersecting the first and second axes. 17. The vehicle frame assembly of claim 16, wherein the third linear member intersects the first and second axes at an angle of approximately 90°. 18. The vehicle frame assembly of claim 14, further comprising a third fastener hole extending through the third threaded portion, a fourth fastener hole extending through the fourth threaded portion, and a second bolt extending through the third and fourth fastener holes to restrain rotation of the third linear member relative to the second linear member.