Weipu “ST” IP67 threaded coupling metal

IP67 ST12 Threaded Coupling Metal Circular Connectors

The Pintail connector range provides low-cost, weathertight standard interconnection for industrial and marine applications. The ST12 shares the same planforms as the SF12 connector but is an IP67 screw coupling model.



ST Pintail connectors can build an indoor/outdoor interconnect system that offers the performance and reliability of MIL threaded connectors at the cost of a commercial (COTS) product. The ST12 (rear panel mount hole size 12mm/front panel mount hole size 14mm) series of multi-pin, threaded coupling connectors will provide IP67 integrity when mated and will work reliably indoors and outdoors where occasional submersion is encountered at a limited depth. It will also remain undamaged by the formation of ice on the enclosure and will resist corrosion.

The IP standard describes a system for classifying the degrees of protection provided by the enclosures of electrical equipment. Developed by the European Committee for Electrotechnical Standardization (CENELEC), these standards are designed to numerically rate an electrical product on the level of protection its enclosure provides. IP67 connectors must allow no ingress of dust with complete protection against contact. IP67 is intended for applications that will get ‘rained on’, or occasionally washed/drenched. They are not intended for use under continuous pressure. In consideration of the broad range of ‘rained on’ definitions, the industry appears to have agreed to a ‘test of immersion for 30 minutes, at a depth of 1 metre, or the equivalent air test at 1.45 psi. That is the Qualification Test. (Protected against the effects of temporary immersion between 15cm and 1metre. Duration of test 30minutes).

ST1210/S6 | ST1213/P6 | ST1210/S5

Key Features

Key Features

  • Conform to industry standard 12mm and 14mm panel cutouts
  • Solder contacts
  • Threaded coupling for positive mating with key/keyway orientation
  • ST12 in 2 to 9 pole
  • Low cost, dual O ring sealing
  • Male or female contacts in any shell type
  • Cable joining plug and in-line socket
  • RoHS Compliant
  • 500 mating cycles



  • Shell – Zinc alloy with black nickel plating
  • Insert – PPS max temperature (260°C)
  • Contact – Stamped/formed brass with gold plating



  • 2 and 3
    Rated current (A) – 13A
    Rated voltage (AC.V) – 250V
    Test voltage (AC.V) 1 min – 1500V
    Contact resistance m – 2
  • 4
    Rated current (A) – 5A
    Rated voltage (AC.V) – 200V
    Test voltage (AC.V) – 1500V
    Contact resistance m -5
  • 5
    Rated current (A) – 5A
    Rated voltage (AC.V) – 180V
    Test voltage (AC.V) – 1000V
    Contact resistance m – 5
  • 6 and 7
    Rated current (A) – 5A
    Rated voltage (AC.V) – 125V
    Test voltage (AC.V) – 1000V
    Contact resistance m – 5
  • 9
    Rated current (A) – 3A
    Rated voltage (AC.V) – 125V
    Test voltage (AC.V) – 1000V
    Contact resistance  – 10m
  • Insulation Resistance – 2,000 m


  • Termination – Solder
  • Mating cycle – >500
  • Cable outer diameter range – 5-8mm
  • Wire size mm2/AWG
    2 – ≤2/14
    3 – ≤2/14
    4 – ≤0.785/18
    5 – ≤0.785/18
    6 – ≤0.785/18
    7 – ≤0.785/18
    9 – ≤0.785/18


  • Working temperature : -25°C to +85°C
  • IP Rating – IP67


  • ST1210/P Cable connector (mates with ST1211, ST1212, ST1213)
  • ST1210/S Cable connector (mates with ST1211, ST1212, ST1213)
  • ST1211/P In-line cable connector (mates with ST1210)
  • ST1211/S Inline cable connector (mates with ST1210)
  • ST1212/P Rear mount (mates with ST1210)
  • ST1212/S Rear mount (mates with ST1210)
  • ST1213/P Front mount (mates wit ST1210)
  • ST1213/S Front mount (mates with ST1210)


Using a combination of dual O ring sealing, high temperature PPS inserts, grommets and compression nuts, all insulator and contact areas in these connectors are fully sealed against environmental elements WHEN MATED. The dual “O” rings (see above picture) mean that the integral backshell can be easily removed to allow accurate soldering of the incoming cable. This makes these connectors suitable for many applications where the use of metal bodied waterproof connectors is deemed preferable to plastic.

Connector end caps are available to suit and IP67 integrity is achieved when male and female connectors are mated or when the IP67 end cap replaces a mating connector.