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A captive structural fastener includes an integral hold-out feature. The fastener includes a stud assembly including a stud, a retaining ring including two oppositely disposed tabs protruding toward the center of the retaining ring, a first sleeve that is mainly engageable with a second sleeve, the

A captive structural fastener includes an integral hold-out feature. The fastener includes a stud assembly including a stud, a retaining ring including two oppositely disposed tabs protruding toward the center of the retaining ring, a first sleeve that is mainly engageable with a second sleeve, the second sleeve including an inwardly disposed channel for receiving the retaining ring; and a receptacle assembly, the receptacle assembly including a bracket constructed and arranged to be secured to a panel, an internally threaded nut, a retaining clamp for securing the nut in the bracket, and a grommet assembly having a bore for receiving the stud therethrough.

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What is claimed is: 1. A fastening assembly, comprising: a stud assembly including a stud, a retaining ring including two oppositely disposed tabs protruding toward the center of the retaining ring, a first sleeve that is mainly engageable with a second sleeve, the second sleeve including an inward

What is claimed is: 1. A fastening assembly, comprising: a stud assembly including a stud, a retaining ring including two oppositely disposed tabs protruding toward the center of the retaining ring, a first sleeve that is mainly engageable with a second sleeve, the second sleeve including an inwardly disposed channel for receiving the retaining ring; and a receptacle assembly, the receptacle assembly including a bracket constructed and arranged to be secured to a panel, an internally threaded nut, a retaining clamp for securing the nut in the bracket, and a grommet assembly including means defining a bore for receiving the stud therethrough; wherein the stud includes a base, a head, and a shank disposed therebetween, the shank including an exterior surface having a threaded section, the exterior surface including at least two longitudinal channels, each channel including at least two engagement regions for engaging the tabs of the retaining ring; wherein the grommet assembly comprises first and second sleeves that are engaged between a substrate panel to form said bore; wherein the retaining clamp engages both the bracket and the nut and provides a single point attachment of the receptacle assembly to the substrate panel; wherein the retaining clamp includes a top collar and a peripheral ledge, the collar engaging with a hole in the bracket and the ledge engaging with the nut. 2. The fastening assembly of claim 1, wherein the at least two engagement regions are spaced apart by a spacing region. 3. The fastening assembly of claim 2, wherein the spacing region is defined by a lobe protruding from the interior surface of the channel between each of the engagement regions and between sidewalls of the channels. 4. The fastening assembly of claim 1, wherein the internally threaded nut includes a substantially planar top portion that is engageable with a support track of the bracket. 5. A fastening assembly, comprising: a stud assembly including a stud, a retaining ring including two oppositely disposed tabs protruding toward the center of the retaining ring, and an upper grommet assembly including an inwardly disposed channel for receiving the retaining ring; and a receptacle assembly, the receptacle assembly including a bracket constructed and arranged to be secured to a panel, an internally threaded nut, a retaining clamp for securing the nut in the bracket, and a lower grommet assembly having a bore for receiving the stud therethrough; wherein the stud includes a base, a head, and a shank disposed therebetween, the shank including an exterior surface having a threaded section, the exterior surface including at least two longitudinal channels, each channel including at least two engagement regions for engaging the tabs of the retaining ring; wherein the lower grommet assembly comprises first and second sleeves that are engaged between a substrate panel to form said bore; wherein the retaining clamp engages both the bracket and the nut and provides a single point attachment of the receptacle assembly to the substrate panel; wherein the retaining clamp includes a top collar and a peripheral ledge, the collar engaging with a hole in the bracket and the ledge engaging with the nut. 6. The fastening assembly of claim 5, wherein the first and second sleeves of the lower grommet assembly are engaged by a compression or force fit. 7. The fastening assembly of claim 6, wherein the second sleeve is force or compression fit with said bracket. 8. The fastening assembly of claim 5, wherein the at least two engagement regions are spaced apart by a spacing region. 9. The fastening assembly of claim 8, wherein the spacing region is defined by a lobe protruding from the interior surface of the channel between each of the engagement regions and between sidewalls of the channels. 10. A fastening assembly, comprising: a stud assembly including a stud, a retaining ring including two oppositely disposed tabs protruding toward the center of the retaining ring, and at least one sleeve including an inwardly disposed channel for receiving the retaining ring; and a receptacle assembly, the receptacle assembly including a bracket constructed and arranged to be secured to a panel, an internally threaded nut, a retaining clamp for securing the nut in the bracket, and a grommet assembly including means defining a bore for receiving the stud therethrough; wherein the stud includes a base, a head, and a shank disposed therebetween, the shank including an exterior surface having a threaded section, the exterior surface including at least two longitudinal channels, each channel including at least two engagement regions for engaging the tabs of the retaining ring; wherein the retaining clamp engages both the bracket and the nut and provides a single point attachment of the receptacle assembly to the substrate panel; wherein the retaining clamp includes a top collar and a peripheral ledge, the collar engaging with a hole in the bracket and the ledge engaging with the nut. 11. The fastening assembly of claim 10 wherein the grommet assembly comprises first and second sleeves that are engaged between a substrate panel to form said bore. 12. The fastening assembly of claim 11 wherein the first and second sleeves of the lower grommet assembly are engaged by a compression or force fit. 13. The fastening assembly of claim 12 wherein the second sleeve is force or compression fit with said bracket. 14. The fastening assembly of claim 13, wherein the at least two engagement regions are spaced apart by a spacing region. 15. A fastening assembly, comprising: a stud assembly including a stud, a retaining ring including two oppositely disposed tabs protruding toward the center of the retaining ring, a first sleeve that is mainly engageable with a second sleeve, the second sleeve including an inwardly disposed channel for receiving the retaining ring; and a receptacle assembly, the receptacle assembly including a bracket constructed and arranged to be secured to a panel, an internally threaded nut, a retaining clamp for securing the nut in the bracket, and a grommet assembly including means defining a bore for receiving the stud therethrough; wherein the inwardly disposed channel of the second sleeve of the stud assembly is defined by opposed walls that capture the retaining ring therebetween, and said retaining ring is circumferentially compressible for insertion into and retention by said inwardly disposed channel; wherein the stud includes a base, a head, and a shank disposed therebetween, the shank including an exterior surface having a threaded section, the exterior surface including at least two longitudinal channels, each channel including at least two engagement regions for engaging the tabs of the retaining ring; wherein the at least two engagement regions are spaced apart by a spacing region and the spacing region is defined by a single lobe protruding from the interior surface of the channel between each of the engagement regions and between sidewalls of the channels; wherein each channel extends longitudinally and continuously from one end to the opposite end of the threaded section of the shank; and wherein said single lobe also extends substantially from one end to the opposite end of the threaded section of the shank and includes a peak point where the depth of the channel is smallest in comparison to the rest of the channel. 16. The fastening assembly of claim 15, wherein the retaining ring has a slot so as to enable the retaining ring to be circumferentially compressible. 17. The fastening assembly of claim 15, wherein the lobe is formed as an arcuate region. 18. The fastening assembly of claim 15, wherein the lobe is formed by opposite ramps terminating at said respective engagement regions. 19. The fastening assembly of claim 18, wherein the opposite ramps have the peak point where the ramps join. 20. The fastening assembly of claim 15, wherein the opposed walls of the second sleeve of the stud assembly includes a lower wall having a central passage of a diameter smaller than the outer diameter of the retaining ring and said retaining ring has a slot so as to enable the retaining ring to be circumferentially compressible so that the diameter thereof is smaller than said central passage so as to enable insertion of the retaining ring into said inwardly disposed channel. 21. A fastening assembly, comprising: a stud assembly including a stud, a retaining ring including two oppositely disposed tabs protruding toward the center of the retaining ring, a first sleeve that is mainly engageable with a second sleeve, the second sleeve including an inwardly disposed channel for receiving the retaining ring; and a receptacle assembly, the receptacle assembly including a bracket constructed and arranged to be secured to a panel, an internally threaded nut, a retaining clamp for securing the nut in the bracket, and a grommet assembly including means defining a bore for receiving the stud therethrough; wherein the inwardly disposed channel of the second sleeve of the stud assembly is defined by opposed walls that capture the retaining ring therebetween, and said retaining ring is circumferentially compressible for insertion into and retention by said inwardly disposed channel; wherein the opposed walls of the second sleeve of the stud assembly includes a lower wall having a central passage of a diameter smaller than the outer diameter of the retaining ring and said retaining ring has a slot so as to enable the retaining ring to be circumferentially compressible so that the diameter thereof is smaller than said central passage so as to enable insertion of the retaining ring into said inwardly disposed channel wherein the stud includes a base, a head, and a shank disposed therebetween, the shank including an exterior surface having a threaded section, the exterior surface including at least two longitudinal channels, each channel including at least two engagement regions for engaging the tabs of the retaining ring; and wherein the at least two engagement regions are spaced apart by a spacing region and the spacing region is defined by a lobe protruding from the interior surface of the channel between each of the engagement regions and between sidewalls of the channels, and wherein the lobe defines a peak point where the depth of the channel is smallest in comparison to the rest of the channel; wherein only one symmetrically shaped lobe is provided and each channel extends longitudinally and continuously from one end to the opposite end of the threaded section of the shank. 22. The fastening assembly of claim 21 wherein the peak is defined by equal length ramps. 23. A fastening assembly for connecting separate upper and lower panels and comprising: a stud assembly including a stud, a retaining ring including two oppositely disposed tabs protruding toward the center of the retaining ring, a first sleeve that is mainly engageable with a second sleeve, the second sleeve including an inwardly disposed channel for receiving the retaining ring; wherein the inwardly disposed channel of the second sleeve of the stud assembly is defined by opposed walls that capture the retaining ring therebetween; a receptacle assembly, the receptacle assembly including a bracket constructed and arranged to be secured to a panel, an internally threaded nut, a retaining clamp for securing the nut in the bracket, and a grommet assembly including means defining a bore for receiving the stud therethrough; said grommet assembly of the receptacle assembly including an upper sleeve that is mainly engageable with a lower sleeve, said bracket having a first hole for receiving the lower sleeve and a second hole; said retaining clamp including a hole that is for alignment with the second hole of the bracket; a fastener that extends though the retaining clamp hole, the second hole of the bracket and a hole in the lower panel so as to secure the bracket and retaining clamp in place; wherein the retaining clamp, by means of the fastener, engages both the bracket and the nut and provides a single point attachment of the receptacle assembly to the lower panel; wherein the stud includes a base, a head, and a shank disposed therebetween, the shank including an exterior surface having a threaded section, the exterior surface including at least two longitudinal channels, each channel including two engagement regions at opposed ends of each channel for engaging the opposed respective tabs of the retaining ring; and wherein the at least two engagement regions are spaced apart by a spacing region and the spacing region is defined by a lobe protruding from the interior surface of the channel between each of the engagement regions and between sidewalls of the channels, and wherein the lobe defines a peak point where the depth of the channel is smallest in comparison to the rest of the channel. 24. The fastening assembly of claim 23 wherein the retaining clamp includes a top collar and a peripheral ledge, the collar engaging with the second hole in the bracket and the ledge engaging with the nut. 25. The fastening assembly of claim 23 wherein the retaining clamp includes a top collar and a peripheral ledge, the collar engaging with a hole in the bracket and the ledge engaging with the nut. 26. The fastening assembly of claim 23 wherein said retaining ring is circumferentially compressable for insertion into and retention by said inwardly disposed channel and the lobe comprises only a single lobe.