as shown in fig1 - 2 and 5 , a furniture item 2 , according to an embodiment of the present invention , can comprise a seat box 4 , a back rest 6 and at least one manual handled threaded fastener 8 . the furniture item 2 can also comprise at least one arm rest 10 depending on the type of furniture . as depicted , the furniture item 2 is a sofa , but can comprise any number of conventional furniture types including , for example , chaises , sectionals , love seats , chairs , benches , or recliners . similarly , the furniture item 2 is depicted as entirely upholstered , but can comprise un - upholstered or partially upholstered furniture . as shown in fig3 - 4 and 9 , the seat box 4 further comprises a rectangular frame 12 and an upper support assembly 14 . the rectangular frame 12 comprises at least one interface plate 16 defining a side of the rectangular frame 12 . each interface plate 16 can comprise at least one bore hole 18 through the interface plate 16 . the upper support assembly 14 is positioned over the rectangular frame 12 to create an internal cavity with the seat box 4 beneath the support assembly 14 . the bottom of the seat box 4 defines an opening for accessing the internal cavity within the seat box 4 . as shown in fig3 - 4 , the back rest 6 further comprises a support structure 20 and a seat box interface plate 22 . the seat box interface plate 22 can further comprise at least one bore hole 24 corresponding to the bore hole 18 . according to an embodiment , the support structure 20 can define an engagement shelf 25 . as shown in fig1 - 18 , each fastener 8 can further comprise a shaft 26 , an alignment portion 28 and a handle 30 . the shaft 26 comprises a threaded portion 32 positioned proximate to the end of the shaft 26 . the alignment portion 28 comprises a tapered portion 34 transitioning between the shaft 26 and an engagement portion 36 . the shaft 26 comprises a smaller diameter than the engagement portion 36 . according to an embodiment , a locking pin 38 is insertable through the handle 30 and the shaft 26 to lock the handle 30 to the shaft 26 . according to an embodiment , the locking pin 38 can comprise a hex shape . similarly , the shaft 26 can define a head portion 41 having a hex shape . in this configuration , the handle 30 can further define a hex shaped recess 43 for receiving the hex shaped head portion 41 of the shaft 26 . according to an embodiment , the shaft 26 can have a length in the range of ½ inch to 3 inches . according to an embodiment , the shaft 26 diameter of the handle 30 can range from 1 inch to 6 inches . as depicted , the handle 30 comprises three prongs that can be gripped by the user , but can comprise any conventional handles that can be manually grasped by the user and rotated . as shown in fig4 , 19 - 22 the seat box 4 is affixable to the back rest 6 by aligning the seat box interface plate 22 with one of the interface plates 16 of the rectangular frame 12 such that the bore holes 18 , 24 are generally aligned . the engagement shelf 25 can be engaged to the rectangular frame 12 to assist in the vertical alignment of the seat box 4 to the back rest 6 . a fastener 8 can then fed be into the inter cavity of seat box 4 through the opening in the bottom of the seat box 4 . the shaft 26 is inserted through the bore holes 18 , 24 until the threaded portion 32 engages the bore hole 24 of the back rest 6 . according to an embodiment , the bore hole 24 can be threaded to engage the threaded portion 32 of the fastener 8 such that the rotation of the fastener 8 pulls and retains the interface places 16 , 22 together . the diameter of the bore hole 18 of the seat box 4 is greater than the diameter of the bore hole 24 of the back rest 6 . if the seat box 4 and back rest 6 is misaligned , the tapered portion 34 of the alignment portion 28 will engage the edges of the bore hole 18 and shift the seat box 4 to correct alignment as the fastener 8 is rotated into the bore holes 18 , 24 . the engagement portion 36 is sized to fit the larger diameter bore hole 18 when the interface plates 16 , 22 are pulled together to assist in maintaining the seat box 4 and the back rest 6 in alignment . according to an embodiment , the bore hole 18 diameter can be greater than the outer diameter of the engagement portion 36 . as shown in fig1 , the furniture item 2 can further comprise a bushing assembly 40 having a bushing portion 42 and at least one engagement portion 44 . the bushing portion 42 is sized to fit within the smaller diameter of the bore hole 24 and defines a threaded interior for engaging the threaded portion 32 of the fastener 8 . as depicted , the engagement portion 44 comprises a spike 46 for engaging the interface plate 22 to maintain the bushing portion 42 within the bore hole 24 . the bushing portion 42 protects the bore hole 24 and prevents cracking or splintering of the interface plate 22 due to stress from the engagement of the threaded portion 32 of the fastener 8 . as shown in fig3 - 4 , each arm rest 10 further comprises a support structure 48 and at least one interface plate 50 having at least one bore hole 52 . in this configuration , the back rest 6 further comprise at least one arm rest interface plate 54 having at least one bore hole 56 and defines an internal cavity within the back rest 6 . the back rest 6 further defines an opening for accessing the internal cavity within the back rest 6 and comprises a flap 58 for selectively closing the opening . the flap 58 can be biased closed by an elastic strap or held closed by a zipper , velcro or other conventional means of releasably closing the flap 58 . as shown in fig1 - 22 , the arm rest 10 can be mounted to back rest 6 in same fashion as the back rest 6 is affixed to the seat box 4 . a fastener 8 can be inserted through the opening in the back rest 6 and inserted through the bore holes 52 , 56 until the treaded portion 32 of the shaft 26 engages the bore hole 52 to pull the interface plates 50 , 54 together and secure the arm rest 10 to the back rest 6 . the bore hole 56 of the back rest 6 has a greater diameter than the bore hole 52 of the arm rest 10 such that tapered portion 34 of the fastener 8 can adjust the alignment of the arm rest 10 to the back rest 6 . according to an embodiment , the bushing assembly 40 can be used with the interface plate 54 to protect the interface plate 50 of the arm rest 10 . according to an embodiment , the interface plate 54 can be sized to also correspond to one of the interface plates 16 of the rectangular frame 12 and engaged to the seat box 4 with a fastener 8 . as shown in fig9 , according to an embodiment of the present invention , the seat box 4 can further comprise a closeable flap 60 for selectively closing the opening in the bottom of the seat box 4 . the closable flap 60 can be maintained in the closed by an engagement feature 62 such as a zipper , velcro or other releasable closure means . the closeable flap 60 allows the interior cavity of the seat box 4 to be used as storage space for cushions , seating elements or other removable items of the furniture item 2 . as shown in fig1 - 14 , according to an embodiment , the upper support assembly 14 can further comprise a fabric layer 64 and a support network 66 . as depicted , the support network 66 comprises a plurality of interwoven metal strips , but can comprise slats or any other conventional means of support users seated on the furniture item . according to an embodiment , the upper support assembly 14 can further comprise at least one velcro strip for engaging seat cushions or seating elements that are placed on the upper support assembly 14 . according to an embodiment , the interface plates 16 , 22 , 50 , 54 can be covered by a fabric layer 68 . the fabric layer can prevent damage to the interface surfaces and provide friction to prevent sliding of the subcomponents relative to each other . in fig2 , a representative set of instructions for assembling the furniture item 2 is depicted . the instructions provide for tool - less assembly of the furniture item 2 . while the invention is amenable to various modifications and alternative forms , specifics thereof have been shown by way of example in the drawings and described in detail . it is understood , however , that the intention is not to limit the invention to the particular embodiments described . on the contrary , the intention is to cover all modifications , equivalents , and alternatives falling within the spirit and scope of the invention as defined by the appended claims .