{
  "metadata": {
    "id": "smc-kq2h07-35n",
    "name": "SMC KQ2H07-35N Push-to-Connect Male Connector 1/4\"",
    "type": "connector",
    "description": "SMC KQ2 series straight one-touch fitting. Connects a 1/4\" OD pneumatic tube to a 1/4\" NPT threaded port. Male thread is 1/4\"-18 NPT (likely no sealant on this model), and the push-in end accepts 1/4\" (6.35 mm) outer diameter tubing. Commonly used for quick connection of air lines to valves, manifolds, or cylinders.",
    "manufacturer": "SMC",
    "part_number": "KQ2H07-35N",
    "datasheet_url": "https://www.smcusa.com/products/male-connector-kq2h~177565",
    "tags": [
      "SMC",
      "push-to-connect",
      "fitting",
      "1/4 NPT",
      "1/4 OD tube",
      "KQ2"
    ],
    "schema_version": "1.4.0",
    "version": "0.2.0",
    "taxonomy": [
      "mechanical.pneumatic"
    ]
  },
  "domains": [
    {
      "domain": "pneumatic",
      "resources": [
        {
          "id": "thread_end",
          "functions": [
            {
              "name": "pneumatic_connection"
            }
          ],
          "connector_type": "threaded_port",
          "thread_standard": "NPT",
          "thread_size": "1/4\"",
          "thread_gender": "male",
          "port_size": "1/4\"",
          "working_pressure_bar": 10,
          "max_pressure_bar": 10,
          "compatible_fluids": [
            "compressed_air"
          ],
          "fluid_temperature_C": [
            -5,
            60
          ],
          "seal_type": "thread_sealant",
          "description": "Male 1/4\"-18 NPT thread (connects into 1/4\" NPT female port)"
        },
        {
          "id": "tube_end",
          "functions": [
            {
              "name": "pneumatic_connection"
            }
          ],
          "connector_type": "quick_connect",
          "tube_od_inch": 0.25,
          "port_size": "1/4\" OD tube",
          "working_pressure_bar": 10,
          "max_pressure_bar": 10,
          "compatible_fluids": [
            "compressed_air"
          ],
          "fluid_temperature_C": [
            -5,
            60
          ],
          "seal_type": "o_ring",
          "description": "Push-to-connect port for 1/4\" outer diameter pneumatic tubing"
        }
      ],
      "interfaces": [
        {
          "id": "npt_male_output",
          "protocol": {
            "type": "pneumatic",
            "role": "output"
          },
          "requires": [
            {
              "function": "pneumatic_connection",
              "count": 1
            }
          ],
          "constraints": [
            {
              "thread_standard": "NPT"
            },
            {
              "thread_size": "1/4\""
            },
            {
              "thread_gender": "female"
            },
            {
              "max_pressure_bar": ">=10.0"
            },
            {
              "compatible_fluids": "compressed_air"
            }
          ],
          "max_instances": 1,
          "description": "1/4\" NPT male output for threaded ports",
          "name": "Npt Male Output"
        },
        {
          "id": "tube_input",
          "protocol": {
            "type": "pneumatic",
            "role": "input"
          },
          "requires": [
            {
              "function": "pneumatic_connection",
              "count": 1
            }
          ],
          "constraints": [
            {
              "tube_od_inch": 0.25
            },
            {
              "max_pressure_bar": "<=10.0"
            },
            {
              "compatible_fluids": "compressed_air"
            }
          ],
          "max_instances": 1,
          "description": "1/4\" OD tube input connection",
          "name": "Tube Input"
        }
      ],
      "metadata": {
        "working_medium": "compressed_air",
        "max_pressure_bar": 10,
        "min_pressure_bar": -0.1,
        "fluid_temperature_C": [
          -5,
          60
        ]
      }
    },
    {
      "domain": "mechanical",
      "resources": [
        {
          "id": "fitting_body",
          "functions": [
            {
              "name": "mounting"
            }
          ],
          "material": "pbt_plastic",
          "dimensions_mm": {
            "length": 35,
            "width": 12,
            "height": 12
          },
          "weight_g": 8,
          "description": "PBT plastic fitting body with hex wrench flats"
        }
      ],
      "interfaces": [],
      "metadata": {
        "mounting_method": "threaded",
        "orientation": "any"
      }
    },
    {
      "domain": "thermal",
      "resources": [],
      "interfaces": [],
      "metadata": {
        "operating_temperature_C": [
          -5,
          60
        ],
        "storage_temperature_C": [
          -20,
          80
        ]
      }
    }
  ],
  "design_rules": [
    "Cut the tubing evenly and insert fully into the fitting until seated (to ensure a tight seal)",
    "Use PTFE tape on the NPT thread if the fitting is not pre-coated with sealant (check for factory-applied sealant)",
    "Do not exceed 1.0 MPa (approximately 145 psi) of pressure"
  ],
  "validation_requirements": [
    "Verify the tubing is of correct outer diameter (1/4\") and is compatible (nylon, polyurethane, etc.)",
    "Ensure the connected port is 1/4\" NPT; do not force into other thread types",
    "Check that the tube is securely gripped by tugging lightly after installation"
  ],
  "usage_notes": "This fitting enables quick connection of a 1/4\" plastic air tube to components with 1/4\" NPT ports. To release the tube, press the circular release ring on the fitting while pulling the tube out. Ideal for modular pneumatic setups where frequent disconnection may be needed.",
  "application_examples": [
    "Connecting an SMC pneumatic cylinder or solenoid valve (with NPT ports) to a 1/4\" air supply line",
    "Integrating 1/4\" OD air tubing in automation equipment with NPT threaded manifolds"
  ],
  "compatibility_notes": "Compatible with standard 1/4\" O.D. pneumatic tubing (inch size). The fitting's NPT thread works with any 1/4\" NPT port; thread sealant or tape is recommended for leak-free performance if not pre-sealed.",
  "warnings": [
    "Ensure no side load on the tubing; excessive bending at the fitting can cause leaks or tube release",
    "Only use within the specified temperature range (-5°C to 60°C) and avoid aggressive chemicals that could degrade the plastic or O-ring",
    "Periodically check the fitting for leaks or wear, especially in vibrating machinery"
  ]
}