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Black Country Metal Works

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Screw Jacks

  • Screw jacks are the effortless way to open your conservatory windows.
  • Made from high grade, heavy quality brass and precision engineered.
  • Comes complete with brackets, and screws.
  • Just fit your winder pole into the looped end of the screw jack and wind it, and your window will open, if you require a conservatory winder pole to operate it, just click on this link to take you to our Winder Pole page.
  • If your window is within arms reach you could also consider installing one of our manual screw jacks, that comes with a small integral opening handle.
  • No need for additional locks, these will act as a locking mechanism for your conservatory skylights and windows.
  • They cannot be physically pulled apart.
  • We have a comprehensive range of excellent matching winder poles, fixed and telescopic, to make opening your “out of reach” conservatory windows even easier.


  • "I look after all the conservatory parts, and check them before they leave here, it’s all quality!"
    Adrian Coldicott
    Conservatory order depot


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    1. Bright Chrome Single Thread Screw Jack

      Part Number: CP701/BC

      £21.99

      • (6")
      • (8")
      • (10")
      • (12")

      (6")

      150mm, Weight: 480g

      A single threaded screw jack, made from solid brass with a bright chrome finish. Available in a set of different sizes, measured by the length of the threaded spindle.


      More product info

    2. Polished Brass Single Thread Screw Jack

      Part Number: CP701/PBL

      £19.99

      • (6")
      • (8")
      • (10")
      • (12")
      • (18")

      (6")

      150mm, Weight: 480g

      This Single Thread Screw Jack comes in a polished brass lacquered finish. Available in different sizes measured by the length of the threaded spindle.

      More product info

    3. Solid Brass Always Screw Jack

      Part Number: CP702/PBL

      £35.99

      • (6.4")
      • (8.5")
      • (10.4")
      • (12.1")

      (6.4")

      165mm, Weight: 210g

      Solid Brass Always Screw Jack is a traditional pull to open conservatory window opener, it combines beauty and precision engineering, to magically glide your windows open. Available in four sizes. Supplied with brass fixing screws.

      More product info

    4. Telescopic Screw Jack With Large Brackets

      Part Number: CP704

      £27.99

      This Telescopic Screw Jack With Large Brackets is provided in polished brass lacquered finish. the screw jack extends from a spindle length of 20mm (8") to an open length of 350mm (14"). Supplied with large U bracket and plush plunger bracket.
      Also available in other finishes.

      Dimensions
      Length when closed is 230mm (9")
      Length when open is 400m (15.8")
      Width of bracket is 50mm (1.9")
      Weight is 647 grams

      More product info

    5. Solid Brass Preston Screw Jack

      Part Number: CP705/PBL/0300

      £25.99

      Our Traditional Solid Brass Preston Screw Jack will give your Edwardian conservatory that authentic touch, it combines beauty and precision engineering, to magically glide your windows open. Max window opening: 266mm (10½") approx. Supplied with brass fixing screws.

      Dimensions (approx)
      Length: 330mm (13")
      Width: 58mm (2¼")
      Depth: 50mm (2")
      Weight: 380g

      More product info

    6. Manual Telescopic Screw Jack

      Part Number: CP708

      £32.99

      Solid brass manual telescopic screw jacks, for low and eye level window openings. High quality construction with integral winder handle. Available in polished brass and bright chrome finishes. Enables windows to open to 177mm (7”) approx.

      Dimensions (approx for 8" Version)
      Overall length open: 267mm (10½”)
      Closed: 190mm (7½”)
      Max width: 102mm (4”)
      Weight: 440g

      More product info

    7. Telescopic Screw Jack (200mm > 350mm)

      Part Number: CP706/PBL

      £26.99

      This Telescopic Screw Jack is provided in polished brass lacquered finish. The screw jack extends from a spindle length of 200mm (8") to an open length of 350mm (14"). Supplied with a standard U bracket and plush plunger bracket.
      Also available in other finishes.

      The U bracket is supplied with the 20mm deep bkt as shown, however on special request we do have a 12.5mm version available , if requested.

      Fixing plates are 50mm x 17mm

      More product info

    8. Telescopic Screw Jack (180mm > 255mm)

      Part Number: CP706/PBL/S

      £18.99


      This Telescopic Screw Jack is comes in a number of different finishes including polished brass, bright chrome and black. Comes with a standarad U and plush plunger bracket.

      The U bracket is supplied with the 20mm deep bkt as shown, however on special request we do have a 12.5mm version available , if requested.

      Trade orders only

      Dimensions
      Total Length Shut: 180mm (7")
      Total Length Open: 255mm (10")
      Width: 70mm (2.7")
      Weight: 386g

      More product info

    9. Narrow Bracket for screw jacks

      Part Number: PN006877

      £7.99

      Sold Out

      Narrow Bracket for screw jacks suitable for narrow style conservatory edging

      Dimensions
      Narrow
      Length (overall) = 60mm (2.5")
      Height = 23mm
      Hook Gap = 8mm
      Width = 12.5mm
      Weight = 55g

      Wider Version
      Height = 23mm
      Hook Gap = 8mm
      Length = 60mm (2.5")
      Width = 20mm
      Weight = 39g

      More product info

    10. Brass Screw Jack

      Part Number: Brass Screw Jack

      Call For Price

      Sold Out

      Dimensions
      Weight: 0.76Kg
      Height: 104mm (4.1")
      Length: 260mm (10.25")
      Width: 47mm (1.85")

      More product info

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