| ReturnTo Theme-Group-Choice | Onelevelup |
| 3J024 | Furniture connections | |
| F16B12/00 -12/60 | ||
| F16B12/00-12/38 | AA | AA00 PHYSICAL APPEARANCE OF CONNNECTIONS |
AA01 | AA02 | AA03 | AA04 | ||||||
| . Leg connections | . . Leg connections to the headboard | . . Leg connection to the horizontal frame | . . Foot connections | |||||||||
| AA11 | AA12 | AA13 | AA14 | AA15 | ||||||||
| . Corner connections | . . Bi-directional connections | . . . Connections of similar panels | . . Tri-directional connections | . . . Connections of similar rods | ||||||||
| AA21 | AA22 | AA23 | AA24 | |||||||||
| . Bed connections | . . Metal joint connections | . . Latch connections | . . Crossbar and side panel connections | |||||||||
| AA31 | AA32 | AA33 | AA34 | AA36 | AA37 | AA38 | ||||||
| . Furniture pipe or tube connections | . . Parallel pipe or tube connections | . . Pipe or tube connections in series | . . T-shaped pipe or tube connections | . Connections of furniture pipes and non-pipes | . . Parallel connections | . . Perpendicular connections | ||||||
| AA41 | AA43 | AA45 | AA47 | AA50 | ||||||||
| . Panels and corner posts | . Side-by-side plate connections | . T-shaped plate connections | . T-shaped rod connections | . Others | ||||||||
| F16B12/00-12/60 | BA | BA00 BOARD AND HEADBOARD MATERIALS |
BA01 | BA02 | BA03 | BA04 | BA05 | |||||
| . Non-metallic materials | . . Synthetic resins | . . Wood | . . Glass | . Metals | ||||||||
| BB | BB00 POST, POLE, AND LEG MATERIALS AND CROSS-SECTIONS |
BB01 | BB02 | BB03 | BB04 | BB06 | ||||||
| . Non-metallic materials | . . Synthetic resins | . . Wood | . Metals | . Long-grooved channels | ||||||||
| CA | CA00 COMMECTION MEANS |
CA01 | CA02 | CA03 | CA04 | CA05 | CA06 | CA07 | ||||
| . Adhesive methods | . . Nails | . . Screws and bolts | . . . T-pin screws | . . Drag links, cams, and wedges | . . Clamps, connections that employ clamps | . . . Interior expansion clamps and clips | ||||||
| CA11 | CA12 | CA13 | CA14 | CA15 | CA16 | CA17 | CA18 | CA19 | CA20 | |||
| . Connection by means of engagement or insertion | . . Keyholes with headed pins | . . Pins | . . Dabos (i.e., dowels) | . . Mortise and dovetail joints | . . Hooks | . . Snap reverse plugs | . . Plug couplings | . . . Couplings with hollow or solid insertion pins | . . . . Insertion pins with protrusions along the length | |||
| CA21 | CA23 | CA24 | CA30 | |||||||||
| . . . . Insertion pins with with protrusions around the circumference | . Integral connections | . . Adhesive agents | . Others |