| 3.5-inch Residential Butt Hinge | Stainless steel 304 or plated carbon steel | 89 × 76 × 2.5 mm | Plain bearing; removable or fixed steel pin | Approximately 60–80 kg | Interior bedroom, office, and light residential doors | Moderate; stainless steel performs better in humid areas | No. 8 or 4.0 mm wood screws | Cost-effective, widely compatible, and easy to install |
| 4-inch Ball-Bearing Hinge | Stainless steel 304 or galvanized carbon steel | 102 × 89 × 3.0 mm | Two bearing points with steel or stainless pin | Approximately 80–120 kg | Heavy solid-wood entrance doors and frequently used interior doors | Good; select stainless steel for exterior exposure | No. 10 or 4.5 mm wood screws | Lower friction, smoother operation, and improved wear resistance |
| 4.5-inch Heavy-Duty Ball-Bearing Hinge | Stainless steel 316 or heavy-gauge carbon steel | 114 × 102 × 3.4 mm | Three-bearing design with reinforced knuckles | Approximately 120–150 kg | Wide solid-wood doors, public buildings, and high-cycle entrances | Very good; 316 stainless steel is suitable for coastal environments | 5.0 mm structural wood screws recommended | High durability and better resistance to sagging under repeated use |
| Solid Brass Decorative Hinge | Solid brass, often lacquered or clear-coated | 76–102 × 64–89 × 2.5–3.0 mm | Plain bearing with brass or steel pin | Approximately 50–90 kg | Traditional, restored, and high-end interior wooden doors | Good indoors; protective coating is needed for outdoor use | No. 8 or 4.0 mm countersunk screws | Warm appearance, good machinability, and compatibility with classic hardware |
| Stainless Steel Lift-Off Hinge | Stainless steel 304 | 100 × 75 × 2.5–3.0 mm | Non-bearing removable pin or rising-pin design | Approximately 60–100 kg | Utility rooms, maintenance-access doors, and removable door leaves | Good to very good, depending on steel grade and finish | No. 8–10 or 4.0–4.5 mm screws | Allows quick door removal without removing the hinge leaves |
| Wrought-Iron Strap Hinge | Forged or formed steel with powder-coated or painted finish | Strap length 200–400 mm; thickness 3–5 mm | Central pin with surface-mounted strap plates | Approximately 80–140 kg | Barn doors, gates, rustic doors, and oversized timber doors | Moderate to good; finish must remain intact to limit rust | 5.0–6.0 mm structural screws or through-bolts | Strong visual character and broad load distribution across the door face |
| Adjustable Three-Dimensional Hinge | Zinc alloy body with steel or stainless adjustment components | 120–160 mm hinge height; 18–24 mm hinge depth | Concealed cam or multi-axis bearing mechanism | Approximately 60–120 kg, subject to the model | Flush, rebated, or architecturally styled interior wooden doors | Moderate; avoid unprotected exposure unless specifically rated | Manufacturer-specified fixing screws, commonly 4.5–6.0 mm | Adjusts height, side-to-side position, and compression after installation |
| Concealed Door Hinge | Machined steel, stainless steel, or zinc alloy | 100–180 mm hinge height; door-dependent depth | Internal pivot or bearing assembly | Approximately 40–100 kg, subject to hinge count | Modern flush doors where the hinge must not be visible | Good indoors; select stainless components for damp locations | Specified by the hinge system; commonly 4.5–6.0 mm | Minimalist appearance and improved tamper resistance |
| Spring-Loaded Self-Closing Hinge | Steel or stainless steel with internal spring | 89–102 × 76–89 × 2.5–3.0 mm | Spring mechanism; plain or bearing-supported pivot | Approximately 40–80 kg | Light interior doors requiring automatic closing | Moderate; stainless steel is preferable in humid environments | No. 8–10 or 4.0–4.5 mm screws | Combines door hanging and basic self-closing functionality |