Hollow Screw Jack
This Hollow Screw Jack is made of high-quality Q235B steel. Its hollow structure is lightweight yet strong. With a cross handle nut, it allows quick and precise height adjustment for scaffolding or formwork. The electro-galvanized/hot-dip galvanized or painted surface ensures excellent rust and corrosion resistance for long-term outdoor use. It is compatible with ringlock, cuplock, and other scaffolding systems, serving as an efficient and safe height adjustment and load-bearing component for construction projects.
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Product Name |
Scaffold Screw Jack |
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Type |
Hollow Threaded Adjustable Jack |
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Screw Material |
Steel |
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Screw Type |
Hollow Round Tube |
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Total Length |
400mm / 500mm / 600mm / 700mm / 800mm ( Customizable) |
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Surface Treatment |
Electro-galvanized /Hot-dip Galvanized |
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Application |
Scaffold Base Support, Formwork Support, Temporary Structure Height Adjustment |
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Compatible System |
Ringlock, Cuplock, Kwikstage Scaffolding Systems |
Appearance Features
It is composed of three parts: hollow screw rod, cross adjusting handle and square base plate, with regular lines and simple structure. The screw rod is made of high-frequency welded pipe with uniform and clear threads, no burrs or deformation. The adjusting handle is cross-wing shaped, easy to grip and evenly stressed when rotating. The base is made of stamped steel plate with smooth edges and flat surface. The central threaded hole matches the screw rod precisely. The whole product has uniform luster after galvanizing or painting, with heavy texture and excellent rust resistance.
Core Advantages
Lightweight & Efficient
The hollow structure is about 30% lighter than solid jacks, saving time and labor in transportation, handling and installation, thus reducing costs.
Easy & Precise Adjustment
The cross handle can be rotated by hand or with simple tools. Installation is fast, and height is fully adjustable to suit uneven ground, enabling efficient leveling of scaffolding.
Durable & Corrosion-Resistant
Made of high-quality Q235B steel with electro-galvanized or hot-dip galvanized finish, it resists moisture and rust, performs well in harsh environments, and is reusable for lower project costs.
Safe & Stable
The thickened base increases the stress area and distributes load evenly, preventing scaffolding from sinking or tilting. The high-precision screw thread ensures tight engagement without loosening, guaranteeing construction safety.
Application Scenarios
This hollow screw jack is widely used in scaffolding support systems for various construction projects.It is ideal for formwork support and height adjustment at the base of scaffolding in building construction, as well as temporary load-bearing support in municipal engineering such as bridges and tunnels. It can also be used for fine height adjustment of temporary fences and working platforms on construction sites, meeting the adjustable support needs of various outdoor construction scenarios. It remains stable even in harsh environments like humidity and heavy rain, making the Screw Jack highly popular among overseas customers.
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