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Adjustable U-Head with Spigot

Price range: £12.25 through £17.75 ex. VAT

The Adjustable U-Head with Spigot provides secure, adaptable support for timber beams on top of adjustable steel Acrow props, ideal for precise levelling in formwork, shoring, and temporary propping.

Delivery 2-5
Working
days.

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Based in Aldingbourne, West Sussex.

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Description

We supply this robust component as part of our commitment to safe, high-quality scaffolding solutions. Manufactured from high-grade steel and compliant with BS1139 and EN74 standards, the Adjustable U-Head with Spigot combines ease of use with exceptional strength, helping contractors achieve stable, accurately positioned support every time, whether on small domestic jobs or large commercial sites.

Benefits

Our Adjustable U-Head with Spigot stands out for its versatility and reliability on the job site. Here are some key advantages:

  • Precision Adjustment: The integrated threaded spigot allows fine-tuning of height, ensuring beams are positioned exactly where needed without compromising stability.
  • Enhanced Safety: Compliant with industry standards like BS1139 and EN74, it provides peace of mind with a substantial safe working load, reducing risks during heavy-duty applications.
  • Versatile Compatibility: Seamlessly integrates with Acrow props, Kwikstage, Cuplock, and similar systems, making it a flexible addition to your scaffolding toolkit.
  • Durability and Longevity: Built from high-grade materials that resist wear and corrosion, this U-head is designed for repeated use in demanding environments, helping you save on replacement costs over time.
  • Ease of Use: Quick installation and adjustment features, including a user-friendly wing nut, streamline setup and minimise downtime on site.

By choosing this accessory, you’re investing in equipment that prioritises efficiency, safety, and adaptability, drawing from our extensive experience in supplying scaffolding solutions across West Sussex and beyond.

Specifications

The Adjustable U-Head with Spigot is engineered for strength and precision. Below are the core technical details:

  • Safe Working Load (SWL): 4 tonnes under concentric loading conditions.
  • Threaded Spigot: 500mm length with a 38mm outer diameter, featuring an ACME thread that meets BS4360/50C standards for superior strength and smooth operation.
  • Materials: Constructed from sustainably sourced, high-strength steel compliant with BS1139 and EN74 for couplers and fittings.
  • Compliance: Fully tested to BS1139 (metal scaffolding components), EN74 (couplers and accessories), and BS2482:2009 guidelines.
  • Primary Applications: Ideal for supporting timber beams in formwork, shoring, flooring systems, and ceiling joists during construction or renovation.

 

Available in multiple sizes to accommodate a range of beam widths, ensuring a perfect fit for your project.

Size Designation

Beam Clearance (mm)

U-Head Plate Dimensions (Width x Height)

Threaded Spigot Length

4″ (100mm)

120

150mm x 100mm

500mm

6″ (150mm)

170

150mm x 100mm

500mm

8″ (200mm)

220

150mm x 100mm

500mm

This table outlines the dimensional variations, allowing you to select the right size based on your beam requirements.

 

Frequently Asked Questions (FAQs)

This accessory is primarily used to provide adjustable support for timber beams on top of Acrow props or scaffolding standards. It allows for fine-tuning of height, making it suitable for applications such as formwork support, shoring, and joist installations.

Yes, it’s designed to work with standard Acrow props as well as modular systems such as Kwikstage and Cuplock. The spigot inserts directly into the prop or standard for a secure fit.

Under concentric loading, it has a safe working load of 4 tonnes. Always ensure loads are applied centrally and consult a structural engineer for site-specific advice.

The 500mm threaded spigot comes with a wing nut for easy adjustment. Simply insert the spigot into the prop, position the U-head at the desired height, and tighten the nut to secure the lock.

Regularly inspect for signs of damage, corrosion, or thread wear. Clean after use and store in a dry environment. Follow BS1139 and EN74 guidelines to maintain safety and performance.

It’s optimised for concentric loading. For any offset applications, we recommend a professional engineering assessment to ensure safety.

Adjustable U-heads have a long threaded spigot (500mm) for accurate height adjustment using a wing nut, making them ideal for levelling beams or adjusting for uneven surfaces. Fixed U-heads feature a short, solid spigot (75mm) for easy, non-adjustable support. Use adjustable heads when precise levelling is needed; choose fixed heads for quick, set-height support.

The size refers to the nominal beam clearance/gap that the U-head can accommodate:

  • 4” (100mm designation) — suits narrower timber beams (approx. 120mm clearance), lighter at ~4.7kg.
  • 6” (150mm) — mid-range for standard joists/bearers (170mm clearance), around 5.75kg.
  • 8” (200mm) — for wider beams (220mm clearance), heavier at ~6.8kg. Select based on your timber beam width, ensure the beam sits fully and centrally in the U for stability and to maintain the 4-tonne concentric SWL.

No, it’s designed and rated for concentric (central) loading only to achieve the full 4-tonne safe working load. Off-centre or eccentric loads reduce capacity significantly and increase tipping or instability risks. For any non-central applications, always consult a qualified structural engineer or temporary works designer to assess and approve safe load limits.

Yes, the 500mm ACME-threaded spigot uses a simple wing nut (often with extended handles for grip) for hand-tightening and adjustment without needing special tools. It provides smooth, precise height changes. Always ensure the wing nut is fully tightened and secure before loading, and avoid over-tightening to prevent thread damage.

Inspect for:

  • Any bends, dents, or deformations in the steel plate or spigot.
  • Corrosion, rust pitting, or galvanising damage (if applicable).
  • Thread wear, burrs, or difficulty turning the wing nut smoothly.
  • Secure fit of the spigot into the prop/standard (no excessive play). Discard or tag out any damaged units. Follow BS1139/EN74 inspection guidelines; regular checks help maintain compliance and prevent failures.

Yes, weights vary slightly: 4” ≈4.7kg, 6” ≈5.75kg, 8” ≈6.8kg. The difference is minor for manual handling but noticeable when carrying multiples on site. All remain lightweight and portable compared to full props or standards.

Additional information

Size

100mm (4"), 150mm (6"), 200mm (8")

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