A scaffold only sits level if the jacks underneath it can adjust to an uneven site surface - and it only stays safe if the jacks up top can take small height corrections without overloading the frame. Adjustable screw jacks, also known as scaffolding jacks, provide precise height adjustment and stable load distribution for scaffold systems used in construction, maintenance and formwork applications. This page compares five verified UAE scaffolding jack suppliers, covering base jacks, U-head jacks, universal jacks, and adjustable prop jacks with real sizes, thicknesses, and finishes.
A scaffolding jack is a threaded screw fitting inserted at the bottom (base jack) or top (U-head jack) of a scaffold standard to level the structure and fine-tune its height. Construction sites are rarely perfectly flat, and a scaffold that's forced to sit on an uneven base without adjustable jacks either racks out of square or leaves one leg carrying more load than it should. UAE suppliers stock jacks in a range of lengths and scaffold jack base plate sizes precisely because no two sites - or even two corners of the same site - have the same ground conditions.
Who is this page for? Site engineers levelling a scaffold on uneven ground, main contractors stocking a standard jack range for active sites, scaffolding rental companies replacing worn jacks between hires, and fit-out contractors needing a handful of jacks for an internal access tower. Scaffolding jacks are commonly used with other scaffolding accessories including scaffold frames, couplers, braces, ledgers, transoms, base plates and scaffold boards to create safe, stable and fully supported access systems for construction projects.
Scaffolding jack specifications vary by manufacturer and scaffold system. The table below shows the typical dimensions and technical characteristics commonly available from scaffolding jack suppliers in the UAE. Always verify the exact specifications before placing an order.
| Specification | Typical Range |
|---|---|
| Material | Mild Steel / High Tensile Steel |
| Finish | Painted or Hot-Dip Galvanized |
| Tube Outside Diameter | 38 mm (Common) |
| Jack Length | 600–760 mm |
| Thread Diameter | 32–38 mm |
| Scaffold jack base plate size | 150 × 150 mm |
| Base Plate Thickness | 4–6 mm |
| Safe Working Load* | 20–60 kN (depending on model) |
| Compatible Systems | H-Frame, Ringlock, Cuplock, Kwikstage and Tube & Coupler Scaffolding |
| Applications | Construction, Formwork, Industrial Maintenance, Infrastructure and Oil & Gas Projects |
*Typical industry values only. Actual dimensions and load capacities vary by manufacturer, scaffold system and applicable standards.
Q: What's the difference between a base jack and a U-head jack?
Both are the same basic component - a threaded screw with a base plate - but they sit at opposite ends of the scaffold and serve different purposes. A base jack sits under the bottom standard, resting on the ground (or a sole board) with a flat plate, and levels the whole structure against uneven ground. A U-head jack sits at the top of a standard with a U-shaped bracket cradling a ledger or bearer, letting you fine-tune working height at the top of the scaffold rather than the bottom.
Five verified suppliers listed on fyind.com - each with different jack types and levels of published detail.
Serves: UAE-wide | View Supplier Profile & Phone Number
New Ammar covers all three core jack positions - universal, base, and U-head - in one listing set, useful if you want a matched jack range from a single Ajman-based supplier rather than sourcing base and top jacks separately.
Serves: UAE-wide | View Supplier Profile & Phone Number
Al Dereya Scaffolding Trading LLC is a verified Ajman-based scaffolding trader listed under scaffolding jacks, alongside its steel scaffolding clamp listing covered elsewhere in this series. Confirm exact jack type, length, and scaffold jack base plate size directly by phone, since specific product listings weren't available to verify at the time of writing.
Phone: 04 885 5001 | Location: Nad Al Hamar, Dubai, UAE | View Supplier Profile
Ascend's Adjustable U Head Jack is the only listing on this page with both width and height stated across two size variants (174 mm / 215 mm width, 94 mm / 120 mm height), useful for matching against a specific bearer or ledger size. Ascend also stands apart by stocking a Telescopic Steel Prop Jack - a formwork/shoring component rather than a scaffold access jack - worth asking about if your project needs slab propping alongside scaffold access.
Serves: UAE-wide | View Supplier Profile & Phone Number
Al Naseeha is the only supplier on this page explicitly stating a galvanized finish on its Universal Jack listing, which matters for jacks that sit at the base of a scaffold in direct ground contact or standing water after rain. Both listings give full base plate dimensions and thickness, making them easy to compare against another supplier's spec sheet.
Serves: UAE-wide | View Supplier Profile & Phone Number
HMI's Adjustable Base Jack gives two base plate thickness options (5 mm or 6 mm) at the same 150 x 150 mm footprint, letting you step up plate thickness for heavier loads without changing the scaffold jack base plate size your scaffold shoes are designed around. Both listings share the 38 mm tube diameter that shows up consistently across this page's verified suppliers.
| Supplier | Jack Types | Best For | Profile |
|---|---|---|---|
| New Ammar Scaffolding Trading LLC | Universal, Base, U-Head | A matched jack range from one Ajman supplier | View |
| Al Dereya Scaffolding Trading LLC | Scaffolding jacks (confirm type/size by phone) | Ajman-based sourcing alongside other fittings | View |
| Ascend Access Systems Scaffolding LLC | Adjustable, Universal, U-Head, Telescopic Prop | Widest range, including formwork prop jacks | View |
| Al Naseeha Building Materials Trading Co LLC | Base, Universal (galvanized) | Ground-contact use needing galvanized finish | View |
| HMI Building Materials Trading LLC | Universal, Adjustable Base | Base plate thickness options at one footprint | View |
Sits under the lowest standard with a flat base plate resting on the ground or a sole board. Its whole job is soaking up uneven, sloped, or soft ground so every standard sits level despite what's actually underneath it.
Sits at the top of a standard with a U-shaped bracket that cradles a ledger, bearer, or formwork beam. Turning the screw fine-tunes the exact height at that point - useful for levelling formwork beams or getting the last few millimetres of platform height right without re-cutting a tube.
In UAE listings, "universal jack" and "adjustable jack" are generally used for the same screw-and-plate mechanism, sold generically enough to work as either a base or top fitting depending on how it's installed. Since the naming isn't strictly standardised between suppliers, check the base plate design and thread length against your specific use rather than relying on the product name alone.
A telescopic steel prop extends to support formwork or a slab pour rather than leveling a scaffold access tower. It's a related but distinct product - Ascend Access Systems is the only supplier on this page listing one, worth asking about if your project needs shoring alongside standard scaffold jacks.
A swivel base jack adds a rotating head beneath the screw mechanism, letting the base plate pivot to sit flush on sloped or uneven ground rather than the plate tilting the whole jack off-vertical. This matters on genuinely uneven sites - industrial yards, sloped access ramps, or ground that hasn't been fully levelled - where a fixed-plate jack would otherwise sit at an angle and lose some of its rated load capacity.
None of the five suppliers on this page explicitly list a swivel-head jack as a separate product from their standard base or universal jacks. If your site genuinely needs a swivel base - rather than the height adjustment a standard base jack already gives you - ask directly whether a rotating-head version is available alongside their existing range.
Not every scaffold jack needs to adjust at all. A fixed base plate is a flat, welded steel plate with no screw thread - used under a standard on genuinely level ground, such as indoor floors, warehouse slabs, or event staging, where height adjustment isn't needed and a simpler, cheaper, more robust component does the job. If your ground is confirmed flat, a fixed plate is a legitimate lower-cost alternative to a full screw jack rather than always defaulting to an adjustable one.
System compatibility: scaffolding jacks generally aren't system-specific - the same base or U-head jack design works across Frame (H-frame) scaffolding, Cuplock, Kwikstage, and traditional tube-and-clamp systems, since it's the tube diameter (typically 38 mm) and base plate size that need to match, not the scaffold system brand. Always confirm tube diameter compatibility rather than assuming a jack is locked to one system.
Every supplier-verified dimension from this page's five suppliers, plus the common sizes buyers typically look for where a supplier hasn't published a specific figure - marked with a tilde (~) so you can tell the two apart at a glance.
| Product | Length / Size | Base Plate | Tube Ø | Finish | Supplier |
|---|---|---|---|---|---|
| Base Jack 150x150x5mm | 600, 750 mm | 150 x 150 x 5 mm | 38 mm | ~Zinc / Galvanized | Al Naseeha |
| Universal Jack 150x150x6mm | 760 mm | 150 x 150 x 6 mm | Hollow section | Galvanized | Al Naseeha |
| Universal Jack, Length 600mm | 600 mm | ~150 x 150 mm | 38 mm | ~Zinc / Galvanized | HMI |
| Adjustable Base Jack, 38mm | 600, 760 mm | 150 x 150 x 5 or 6 mm | 38 mm | ~Zinc / Galvanized | HMI |
| Adjustable U Head Jack | Width 174/215 mm, Height 94/120 mm | N/A (U-bracket) | ~38 mm | ~Zinc / Galvanized | Ascend |
| Universal Jack / Adjustable Jack | ~600–750 mm | ~150 x 150 mm | ~38 mm | ~Zinc / Galvanized | Ascend, New Ammar |
| Base Jack / U Head Jack | ~600–750 mm | ~150 x 150 mm | ~38 mm | ~Zinc / Galvanized | New Ammar |
| Telescopic Steel Prop Jack | ~1.0–3.0 m extended | N/A | N/A (prop tube) | ~Zinc / Galvanized | Ascend |
Q: What size scaffolding jack do I need?
Verified listings on this page run 600–760 mm in overall length, with base plates commonly 150 x 150 mm at 4–6 mm thickness, and a 38 mm tube outer diameter matching standard scaffold tube. Length determines how much height adjustment the jack can give you; scaffold jack base plate size and thickness determine how much load and ground pressure it can handle without deforming.
Scaffolding jacks are available in different configurations depending on the scaffold system and project requirements. The table below compares the most commonly used scaffolding jack types supplied in the UAE, helping buyers select the right option for construction, formwork, industrial maintenance and infrastructure projects.
| Jack Type | Typical Material | Typical Dimensions | Primary Function | Best For |
|---|---|---|---|---|
| Base Jack | Mild Steel / Galvanized Steel | 600–760 mm 150 × 150 mm Base Plate |
Levels scaffolds on uneven surfaces. | Building Construction |
| U-Head Jack | Mild Steel / Galvanized Steel | 600–760 mm | Supports beams and formwork. | Formwork & Shoring |
| Universal Jack | High-Tensile Steel | 600–760 mm | Provides adjustable scaffold height. | General Scaffolding |
| Adjustable Jack | High-Tensile Steel | 600–760 mm | Fine height adjustment and stability. | Industrial Projects |
| Telescopic Steel Prop | Heavy-Duty Steel | Adjustable Extension | Temporary support for slabs and beams. | Concrete Formwork |
Note: Dimensions, material grade, finish, load capacity and thread specifications may vary depending on the manufacturer and scaffold system. Always verify technical specifications before purchasing.
The figures below are a general market guide, not a quote from any supplier named on this page. Jack pricing depends on length, base plate thickness, finish, and order volume, and it moves with steel costs over time - always confirm a firm quote directly.
| Jack Type | Typical AED Range (per piece) | What Moves the Price |
|---|---|---|
| Base Jack / Universal Jack | AED 20 – 45 | Length, base plate thickness, plain vs galvanized finish |
| U-Head Jack | AED 20 – 45 | Similar range to base jacks; bracket size affects cost slightly |
| Telescopic Steel Prop Jack | AED 60 – 150 | Extension length and load rating for formwork/shoring duty |
Note: these ranges are indicative market pricing for buyer guidance only and are not quotes from any of the five suppliers listed on this page.
| Problem | Why It Happens | Fix |
|---|---|---|
| Seized or stiff thread | Grit, rust, or lack of lubrication builds up in the screw thread over repeated use | Clean and lightly grease threads between uses; retire jacks that won't turn smoothly |
| Bent or deformed base plate | Overloading on soft ground concentrates pressure past the plate's rated capacity | Use a sole board to spread load on soft ground; retire any visibly bent plate |
| Corrosion at the base | Ground contact and standing water accelerate rust, especially on unplated jacks | Specify galvanized finish for ground-contact jacks; inspect regularly for pitting |
| Over-extended thread | Winding the jack out past its safe adjustment range to compensate for a badly graded base | Regrade the base rather than over-extending; keep extension within the manufacturer's marked limit |
150 x 150 mm is the most common scaffold jack base plate size in verified UAE listings, at thicknesses of 4–6 mm. Heavier loads or softer ground generally call for the thicker end of that range.
Not usually - a base jack has a flat plate for ground contact, while a U-head jack has a bracket shaped to cradle a ledger or bearer. A "universal" or "adjustable" jack is sometimes generic enough to serve either role, but check the actual fitting design rather than assuming from the name.
Galvanized finish is worth specifying for any jack that will sit at the base of a scaffold in ground contact or standing water for an extended period, since UAE humidity and occasional rain accelerate corrosion on unplated steel faster than short-term indoor use would.
No. A telescopic steel prop jack supports formwork or a slab pour, while a scaffolding jack (base or U-head) levels or fine-tunes a scaffold access structure. They're related screw-mechanism products but serve different jobs on site.
Before purchasing a scaffolding jack, check the overall length, tube diameter, thread size, base plate dimensions, plate thickness, material, finish, and the manufacturer's rated load capacity. Most scaffolding jacks supplied in the UAE feature a 38 mm tube diameter, 600–760 mm length, and 150 × 150 mm base plates, but specifications may vary depending on the scaffold system and manufacturer.
Mild steel scaffolding jacks are widely used for general construction because they provide excellent strength and durability. For projects exposed to moisture, coastal environments, or long-term outdoor use, hot-dip galvanized steel jacks are generally preferred because they offer improved corrosion resistance and require less maintenance.
While dimensions vary between manufacturers, common scaffolding jacks supplied in the UAE typically have a 38 mm tube diameter, an overall length of 600–760 mm, and a 150 × 150 mm base plate with a thickness between 4 mm and 6 mm. Always verify the dimensions to ensure compatibility with your scaffold system.
Contact the suppliers above directly with your required jack type, length, scaffold jack base plate size, and quantity. Pricing depends on all of those details plus current steel costs, so it isn't something a generic price list can reflect accurately.
